diff --git a/ci/browser_tests_chrome.sh b/ci/browser_tests_chrome.sh
index 5430bdb2b4..02ecb17e58 100755
--- a/ci/browser_tests_chrome.sh
+++ b/ci/browser_tests_chrome.sh
@@ -7,7 +7,7 @@ setupRemixd () {
   cd contracts
   echo 'sharing folder: '
   echo $PWD
-  ./../node_modules/remixd/bin/remixd -s $PWD --remix-ide http://127.0.0.1:8080 &
+  ./../node_modules/.bin/remixd -s $PWD --remix-ide http://127.0.0.1:8080 &
   cd ..
 }
 
diff --git a/ci/browser_tests_firefox.sh b/ci/browser_tests_firefox.sh
index 8ba2bacf06..90def58992 100755
--- a/ci/browser_tests_firefox.sh
+++ b/ci/browser_tests_firefox.sh
@@ -7,7 +7,7 @@ setupRemixd () {
   cd contracts
   echo 'sharing folder: '
   echo $PWD
-  ./../node_modules/remixd/bin/remixd -s $PWD --remix-ide http://127.0.0.1:8080 &
+  ./../node_modules/.bin/remixd -s $PWD --remix-ide http://127.0.0.1:8080 &
   cd ..
 }
 
diff --git a/embark/index.js b/embark/index.js
index a742fad09e..dcd0b64b39 100644
--- a/embark/index.js
+++ b/embark/index.js
@@ -13,7 +13,7 @@ const DEFAULT_OPTIONS = {
 module.exports = (embark) => {
   // plugin options
   const readOnly = embark.pluginConfig.readOnly || false
-  const {protocol, host, port} = merge.recursive(DEFAULT_OPTIONS, embark.pluginConfig.remixIde)
+  const { protocol, host, port } = merge.recursive(DEFAULT_OPTIONS, embark.pluginConfig.remixIde)
 
   // globals
   const remixIdeUrl = `${protocol}://${host}` + `${port ? `:${port}` : ''}`
diff --git a/package-lock.json b/package-lock.json
index be4d18ddb4..4bcc1a4232 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -2099,17 +2099,46 @@
         "@fortawesome/fontawesome-common-types": "^0.2.29"
       }
     },
-    "@improved/node": {
-      "version": "1.1.1",
-      "resolved": "https://registry.npmjs.org/@improved/node/-/node-1.1.1.tgz",
-      "integrity": "sha512-ePDxG9UuU9Kobk90ZUjtmDW8IT9U7aRb1/Rl9683MRNM+ur0ocHL2v7TPH2ajTiVSBUFbbeW8vKIt9jrb0JIAA==",
-      "dev": true
-    },
     "@remixproject/engine": {
       "version": "0.2.4",
       "resolved": "https://registry.npmjs.org/@remixproject/engine/-/engine-0.2.4.tgz",
       "integrity": "sha512-rCekA2QZq5wbT7h9wqU+TDkRexUqhnMqcggmP+eG6ilowyZ4RhMsrrSl3fsZzd0rnp4w1LSmX0vCbuXfja3RqQ=="
     },
+    "@remixproject/plugin": {
+      "version": "0.3.0-alpha.3",
+      "resolved": "https://registry.npmjs.org/@remixproject/plugin/-/plugin-0.3.0-alpha.3.tgz",
+      "integrity": "sha512-8Vd0/zj/ZxXIYrC+p9DZdi/ZOMeZEvvIJOavxNeiDC2H2KFc0Uwaw1y4x3JMeLGd6LnFZq54MYgscDpYJvnTHw==",
+      "dev": true,
+      "requires": {
+        "@types/node": "^13.13.4",
+        "events": "^3.0.0"
+      },
+      "dependencies": {
+        "@types/node": {
+          "version": "13.13.12",
+          "resolved": "https://registry.npmjs.org/@types/node/-/node-13.13.12.tgz",
+          "integrity": "sha512-zWz/8NEPxoXNT9YyF2osqyA9WjssZukYpgI4UYZpOjcyqwIUqWGkcCionaEb9Ki+FULyPyvNFpg/329Kd2/pbw==",
+          "dev": true
+        }
+      }
+    },
+    "@remixproject/plugin-ws": {
+      "version": "0.3.0-alpha.1",
+      "resolved": "https://registry.npmjs.org/@remixproject/plugin-ws/-/plugin-ws-0.3.0-alpha.1.tgz",
+      "integrity": "sha512-e6d6Bzf8Pdz3PID8mCpKifBjAVaaIk3+0/iDm6tN3GR5j+iELpq/ddZF6UGAT9kAliOdmNDDnBTSN7Fg1/9sLw==",
+      "dev": true,
+      "requires": {
+        "@remixproject/plugin": "0.3.0-alpha.1"
+      },
+      "dependencies": {
+        "@remixproject/plugin": {
+          "version": "0.3.0-alpha.1",
+          "resolved": "https://registry.npmjs.org/@remixproject/plugin/-/plugin-0.3.0-alpha.1.tgz",
+          "integrity": "sha512-9ImF6Zrk58jSMabiBnn00dfjCma6Dr1bzlr4Y7DpK0+cukagPgt5GI1Cx6FxRA7CKzHj7OAxl4HmtlieIrQTyA==",
+          "dev": true
+        }
+      }
+    },
     "@resolver-engine/core": {
       "version": "0.3.3",
       "resolved": "https://registry.npmjs.org/@resolver-engine/core/-/core-0.3.3.tgz",
@@ -2167,6 +2196,12 @@
         "@types/node": "*"
       }
     },
+    "@types/color-name": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/@types/color-name/-/color-name-1.1.1.tgz",
+      "integrity": "sha512-rr+OQyAjxze7GgWrSaJwydHStIhHq2lvY3BOC2Mj7KnzI7XK0Uw1TOOdI9lDoajEbSWLiYgoo4f1R51erQfhPQ==",
+      "dev": true
+    },
     "@types/node": {
       "version": "14.0.14",
       "resolved": "https://registry.npmjs.org/@types/node/-/node-14.0.14.tgz",
@@ -2228,12 +2263,6 @@
       "integrity": "sha512-cV4+sAmshf8ysU2USutrSRYQkJzEYKHsRCGa0CkMElGpG5747VHtkfsW3NdVIBV/m2MDKXTDydT4lkrysH7IFA==",
       "dev": true
     },
-    "@zeit/schemas": {
-      "version": "1.1.1",
-      "resolved": "https://registry.npmjs.org/@zeit/schemas/-/schemas-1.1.1.tgz",
-      "integrity": "sha512-IV08mGz2ZeBq5WuYuxtT05PHpGHpuswW52s7SSeLBl8yPVgdr8CdPr7Dh89Vd5tmffz/EdUHH8FvJTXbVAYC2g==",
-      "dev": true
-    },
     "JSONStream": {
       "version": "1.3.5",
       "resolved": "https://registry.npmjs.org/JSONStream/-/JSONStream-1.3.5.tgz",
@@ -2338,12 +2367,6 @@
       "integrity": "sha512-OPdCF6GsMIP+Az+aWfAAOEt2/+iVDKE7oy6lJ098aoe59oAmK76qV6Gw60SbZ8jHuG2wH058GF4pLFbYamYrVA==",
       "dev": true
     },
-    "add-stream": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/add-stream/-/add-stream-1.0.0.tgz",
-      "integrity": "sha1-anmQQ3ynNtXhKI25K9MmbV9csqo=",
-      "dev": true
-    },
     "aes-js": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/aes-js/-/aes-js-3.0.0.tgz",
@@ -2445,22 +2468,6 @@
         "normalize-path": "^2.0.0"
       }
     },
-    "aproba": {
-      "version": "1.2.0",
-      "resolved": "https://registry.npmjs.org/aproba/-/aproba-1.2.0.tgz",
-      "integrity": "sha512-Y9J6ZjXtoYh8RnXVCMOU/ttDmk1aBjunq9vO0ta5x85WDQiQfUF9sIPBITdbiiIVcBo03Hi3jMxigBtsddlXRw==",
-      "dev": true
-    },
-    "are-we-there-yet": {
-      "version": "1.1.5",
-      "resolved": "https://registry.npmjs.org/are-we-there-yet/-/are-we-there-yet-1.1.5.tgz",
-      "integrity": "sha512-5hYdAkZlcG8tOLujVDTgCT+uPX0VnpAH28gWsLfzpXYm7wP6mp5Q/gYyR7YQ0cKVJcXJnl3j2kpBan13PtQf6w==",
-      "dev": true,
-      "requires": {
-        "delegates": "^1.0.0",
-        "readable-stream": "^2.0.6"
-      }
-    },
     "arg": {
       "version": "4.1.3",
       "resolved": "https://registry.npmjs.org/arg/-/arg-4.1.3.tgz",
@@ -2496,24 +2503,12 @@
       "integrity": "sha1-45sJrqne+Gao8gbiiK9jkZuuOcQ=",
       "dev": true
     },
-    "array-find-index": {
-      "version": "1.0.2",
-      "resolved": "https://registry.npmjs.org/array-find-index/-/array-find-index-1.0.2.tgz",
-      "integrity": "sha1-3wEKoSh+Fku9pvlyOwqWoexBh6E=",
-      "dev": true
-    },
     "array-flatten": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/array-flatten/-/array-flatten-1.1.1.tgz",
       "integrity": "sha1-ml9pkFGx5wczKPKgCJaLZOopVdI=",
       "dev": true
     },
-    "array-ify": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/array-ify/-/array-ify-1.0.0.tgz",
-      "integrity": "sha1-nlKHYrSpBmrRY6aWKjZEGOlibs4=",
-      "dev": true
-    },
     "array-includes": {
       "version": "3.1.1",
       "resolved": "https://registry.npmjs.org/array-includes/-/array-includes-3.1.1.tgz",
@@ -2525,21 +2520,6 @@
         "is-string": "^1.0.5"
       }
     },
-    "array-union": {
-      "version": "1.0.2",
-      "resolved": "https://registry.npmjs.org/array-union/-/array-union-1.0.2.tgz",
-      "integrity": "sha1-mjRBDk9OPaI96jdb5b5w8kd47Dk=",
-      "dev": true,
-      "requires": {
-        "array-uniq": "^1.0.1"
-      }
-    },
-    "array-uniq": {
-      "version": "1.0.3",
-      "resolved": "https://registry.npmjs.org/array-uniq/-/array-uniq-1.0.3.tgz",
-      "integrity": "sha1-r2rId6Jcx/dOBYiUdThY39sk/bY=",
-      "dev": true
-    },
     "array-unique": {
       "version": "0.2.1",
       "resolved": "https://registry.npmjs.org/array-unique/-/array-unique-0.2.1.tgz",
@@ -3331,13 +3311,13 @@
       }
     },
     "browserslist": {
-      "version": "4.12.1",
-      "resolved": "https://registry.npmjs.org/browserslist/-/browserslist-4.12.1.tgz",
-      "integrity": "sha512-WMjXwFtPskSW1pQUDJRxvRKRkeCr7usN0O/Za76N+F4oadaTdQHotSGcX9jT/Hs7mSKPkyMFNvqawB/1HzYDKQ==",
+      "version": "4.12.2",
+      "resolved": "https://registry.npmjs.org/browserslist/-/browserslist-4.12.2.tgz",
+      "integrity": "sha512-MfZaeYqR8StRZdstAK9hCKDd2StvePCYp5rHzQCPicUjfFliDgmuaBNPHYUTpAywBN8+Wc/d7NYVFkO0aqaBUw==",
       "dev": true,
       "requires": {
         "caniuse-lite": "^1.0.30001088",
-        "electron-to-chromium": "^1.3.481",
+        "electron-to-chromium": "^1.3.483",
         "escalade": "^3.0.1",
         "node-releases": "^1.1.58"
       }
@@ -3409,12 +3389,6 @@
       "integrity": "sha1-hZgoeOIbmOHGZCXgPQF0eI9Wnug=",
       "dev": true
     },
-    "byline": {
-      "version": "5.0.0",
-      "resolved": "https://registry.npmjs.org/byline/-/byline-5.0.0.tgz",
-      "integrity": "sha1-dBxSFkaOrcRXsDQQEYrXfejB3bE=",
-      "dev": true
-    },
     "bytes": {
       "version": "3.1.0",
       "resolved": "https://registry.npmjs.org/bytes/-/bytes-3.1.0.tgz",
@@ -3508,32 +3482,15 @@
       }
     },
     "camelcase": {
-      "version": "4.1.0",
-      "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-4.1.0.tgz",
-      "integrity": "sha1-1UVjW+HjPFQmScaRc+Xeas+uNN0=",
+      "version": "5.3.1",
+      "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-5.3.1.tgz",
+      "integrity": "sha512-L28STB170nwWS63UjtlEOE3dldQApaJXZkOI1uMFfzf3rRuPegHaHesyee+YxQ+W6SvRDQV6UrdOdRiR153wJg==",
       "dev": true
     },
-    "camelcase-keys": {
-      "version": "4.2.0",
-      "resolved": "https://registry.npmjs.org/camelcase-keys/-/camelcase-keys-4.2.0.tgz",
-      "integrity": "sha1-oqpfsa9oh1glnDLBQUJteJI7m3c=",
-      "dev": true,
-      "requires": {
-        "camelcase": "^4.1.0",
-        "map-obj": "^2.0.0",
-        "quick-lru": "^1.0.0"
-      }
-    },
     "caniuse-lite": {
-      "version": "1.0.30001088",
-      "resolved": "https://registry.npmjs.org/caniuse-lite/-/caniuse-lite-1.0.30001088.tgz",
-      "integrity": "sha512-6eYUrlShRYveyqKG58HcyOfPgh3zb2xqs7NvT2VVtP3hEUeeWvc3lqhpeMTxYWBBeeaT9A4bKsrtjATm66BTHg==",
-      "dev": true
-    },
-    "capture-stack-trace": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npmjs.org/capture-stack-trace/-/capture-stack-trace-1.0.1.tgz",
-      "integrity": "sha512-mYQLZnx5Qt1JgB1WEiMCf2647plpGeQ2NMR/5L0HNZzGQo4fuSPnK+wjfPnKZV0aiJDgzmWqqkV/g7JD+DW0qw==",
+      "version": "1.0.30001090",
+      "resolved": "https://registry.npmjs.org/caniuse-lite/-/caniuse-lite-1.0.30001090.tgz",
+      "integrity": "sha512-QzPRKDCyp7RhjczTPZaqK3CjPA5Ht2UnXhZhCI4f7QiB5JK6KEuZBxIzyWnB3wO4hgAj4GMRxAhuiacfw0Psjg==",
       "dev": true
     },
     "cardinal": {
@@ -3648,12 +3605,6 @@
       "integrity": "sha512-jJ0bqzaylmJtVnNgzTeSOs8DPavpbYgEr/b0YL8/2GO3xJEhInFmhKMUnEJQjZumK7KXGFhUy89PrsJWlakBVg==",
       "dev": true
     },
-    "ci-info": {
-      "version": "1.6.0",
-      "resolved": "https://registry.npmjs.org/ci-info/-/ci-info-1.6.0.tgz",
-      "integrity": "sha512-vsGdkwSCDpWmP80ncATX7iea5DWQemg1UgCW5J8tqjU3lYw4FBYuj89J0CTVomA7BEfvSZd84GmHko+MxFQU2A==",
-      "dev": true
-    },
     "cipher-base": {
       "version": "1.0.4",
       "resolved": "https://registry.npmjs.org/cipher-base/-/cipher-base-1.0.4.tgz",
@@ -3731,14 +3682,47 @@
       "integrity": "sha512-GRMWDxpOB6Dgk2E5Uo+3eEBvtOOlimMmpbFiKuLFnQzYDavtLFY3K5ona41jgN/WdRZtG7utuVSVTL4HbZHGkw=="
     },
     "cliui": {
-      "version": "3.2.0",
-      "resolved": "https://registry.npmjs.org/cliui/-/cliui-3.2.0.tgz",
-      "integrity": "sha1-EgYBU3qRbSmUD5NNo7SNWFo5IT0=",
+      "version": "4.1.0",
+      "resolved": "https://registry.npmjs.org/cliui/-/cliui-4.1.0.tgz",
+      "integrity": "sha512-4FG+RSG9DL7uEwRUZXZn3SS34DiDPfzP0VOiEwtUWlE+AR2EIg+hSyvrIgUUfhdgR/UkAeW2QHgeP+hWrXs7jQ==",
       "dev": true,
       "requires": {
-        "string-width": "^1.0.1",
-        "strip-ansi": "^3.0.1",
+        "string-width": "^2.1.1",
+        "strip-ansi": "^4.0.0",
         "wrap-ansi": "^2.0.0"
+      },
+      "dependencies": {
+        "ansi-regex": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-3.0.0.tgz",
+          "integrity": "sha1-7QMXwyIGT3lGbAKWa922Bas32Zg=",
+          "dev": true
+        },
+        "is-fullwidth-code-point": {
+          "version": "2.0.0",
+          "resolved": "https://registry.npmjs.org/is-fullwidth-code-point/-/is-fullwidth-code-point-2.0.0.tgz",
+          "integrity": "sha1-o7MKXE8ZkYMWeqq5O+764937ZU8=",
+          "dev": true
+        },
+        "string-width": {
+          "version": "2.1.1",
+          "resolved": "https://registry.npmjs.org/string-width/-/string-width-2.1.1.tgz",
+          "integrity": "sha512-nOqH59deCq9SRHlxq1Aw85Jnt4w6KvLKqWVik6oA9ZklXLNIOlqg4F2yrT1MVaTjAqvVwdfeZ7w7aCvJD7ugkw==",
+          "dev": true,
+          "requires": {
+            "is-fullwidth-code-point": "^2.0.0",
+            "strip-ansi": "^4.0.0"
+          }
+        },
+        "strip-ansi": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-4.0.0.tgz",
+          "integrity": "sha1-qEeQIusaw2iocTibY1JixQXuNo8=",
+          "dev": true,
+          "requires": {
+            "ansi-regex": "^3.0.0"
+          }
+        }
       }
     },
     "clone": {
@@ -3756,16 +3740,6 @@
         "mimic-response": "^1.0.0"
       }
     },
-    "cmd-shim": {
-      "version": "2.1.0",
-      "resolved": "https://registry.npmjs.org/cmd-shim/-/cmd-shim-2.1.0.tgz",
-      "integrity": "sha512-A5C0Cyf2H8sKsHqX0tvIWRXw5/PK++3Dc0lDbsugr90nOECLLuSPahVQBG8pgmgiXgm/TzBWMqI2rWdZwHduAw==",
-      "dev": true,
-      "requires": {
-        "graceful-fs": "^4.1.2",
-        "mkdirp": "~0.5.0"
-      }
-    },
     "co": {
       "version": "4.6.0",
       "resolved": "https://registry.npmjs.org/co/-/co-4.6.0.tgz",
@@ -3842,16 +3816,6 @@
         "text-hex": "1.0.x"
       }
     },
-    "columnify": {
-      "version": "1.5.4",
-      "resolved": "https://registry.npmjs.org/columnify/-/columnify-1.5.4.tgz",
-      "integrity": "sha1-Rzfd8ce2mop8NAVweC6UfuyOeLs=",
-      "dev": true,
-      "requires": {
-        "strip-ansi": "^3.0.0",
-        "wcwidth": "^1.0.0"
-      }
-    },
     "combine-source-map": {
       "version": "0.8.0",
       "resolved": "https://registry.npmjs.org/combine-source-map/-/combine-source-map-0.8.0.tgz",
@@ -3887,15 +3851,6 @@
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       "dev": true
     },
-    "command-join": {
-      "version": "2.0.1",
-      "resolved": "https://registry.npmjs.org/command-join/-/command-join-2.0.1.tgz",
-      "integrity": "sha512-LBA9kSxtg2SA8itaBeuitpn4pZQOhGVP1dyU1cnXLYrBpF3sikaPhjWPqyqVh7oGpneI05RtJs9a0fftIEgXcA==",
-      "dev": true,
-      "requires": {
-        "@improved/node": "^1.0.0"
-      }
-    },
     "commander": {
       "version": "2.20.3",
       "resolved": "https://registry.npmjs.org/commander/-/commander-2.20.3.tgz",
@@ -3908,16 +3863,6 @@
       "integrity": "sha1-3dgA2gxmEnOTzKWVDqloo6rxJTs=",
       "dev": true
     },
-    "compare-func": {
-      "version": "1.3.4",
-      "resolved": "https://registry.npmjs.org/compare-func/-/compare-func-1.3.4.tgz",
-      "integrity": "sha512-sq2sWtrqKPkEXAC8tEJA1+BqAH9GbFkGBtUOqrUX57VSfwp8xyktctk+uLoRy5eccTdxzDcVIztlYDpKs3Jv1Q==",
-      "dev": true,
-      "requires": {
-        "array-ify": "^1.0.0",
-        "dot-prop": "^3.0.0"
-      }
-    },
     "component-emitter": {
       "version": "1.3.0",
       "resolved": "https://registry.npmjs.org/component-emitter/-/component-emitter-1.3.0.tgz",
@@ -3962,12 +3907,6 @@
       "integrity": "sha512-ZMkYO/LkF17QvCPqM0gxw8yUzigAOZOSWSHg91FH6orS7vcEj5dVZTidN2fQ14yBSdg97RqhSNwLUXInd52OTA==",
       "dev": true
     },
-    "console-control-strings": {
-      "version": "1.1.0",
-      "resolved": "https://registry.npmjs.org/console-control-strings/-/console-control-strings-1.1.0.tgz",
-      "integrity": "sha1-PXz0Rk22RG6mRL9LOVB/mFEAjo4=",
-      "dev": true
-    },
     "constant-case": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/constant-case/-/constant-case-2.0.0.tgz",
@@ -4005,470 +3944,385 @@
       "integrity": "sha512-hIP3EEPs8tB9AT1L+NUqtwOAps4mk2Zob89MWXMHjHWg9milF/j4osnnQLXBCBFBk/tvIG/tUc9mOUJiPBhPXA==",
       "dev": true
     },
-    "conventional-changelog": {
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+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/y18n/-/y18n-4.0.0.tgz",
+      "integrity": "sha512-r9S/ZyXu/Xu9q1tYlpsLIsa3EeLXXk0VwlxqTcFRfg9EhMW+17kbt9G0NrgCmhGb5vT2hyhJZLfDGx+7+5Uj/w==",
       "dev": true
     },
     "yaeti": {
@@ -20101,24 +17662,23 @@
       "dev": true
     },
     "yargs": {
-      "version": "8.0.2",
-      "resolved": "https://registry.npmjs.org/yargs/-/yargs-8.0.2.tgz",
-      "integrity": "sha1-YpmpBVsc78lp/355wdkY3Osiw2A=",
+      "version": "12.0.5",
+      "resolved": "https://registry.npmjs.org/yargs/-/yargs-12.0.5.tgz",
+      "integrity": "sha512-Lhz8TLaYnxq/2ObqHDql8dX8CJi97oHxrjUcYtzKbbykPtVW9WB+poxI+NM2UIzsMgNCZTIf0AQwsjK5yMAqZw==",
       "dev": true,
       "requires": {
-        "camelcase": "^4.1.0",
-        "cliui": "^3.2.0",
-        "decamelize": "^1.1.1",
+        "cliui": "^4.0.0",
+        "decamelize": "^1.2.0",
+        "find-up": "^3.0.0",
         "get-caller-file": "^1.0.1",
-        "os-locale": "^2.0.0",
-        "read-pkg-up": "^2.0.0",
+        "os-locale": "^3.0.0",
         "require-directory": "^2.1.1",
         "require-main-filename": "^1.0.1",
         "set-blocking": "^2.0.0",
         "string-width": "^2.0.0",
         "which-module": "^2.0.0",
-        "y18n": "^3.2.1",
-        "yargs-parser": "^7.0.0"
+        "y18n": "^3.2.1 || ^4.0.0",
+        "yargs-parser": "^11.1.1"
       },
       "dependencies": {
         "ansi-regex": {
@@ -20155,12 +17715,13 @@
       }
     },
     "yargs-parser": {
-      "version": "7.0.0",
-      "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-7.0.0.tgz",
-      "integrity": "sha1-jQrELxbqVd69MyyvTEA4s+P139k=",
+      "version": "11.1.1",
+      "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-11.1.1.tgz",
+      "integrity": "sha512-C6kB/WJDiaxONLJQnF8ccx9SEeoTTLek8RVbaOIsrAUS8VrBEXfmeSnCZxygc+XC2sNMBIwOOnfcxiynjHsVSQ==",
       "dev": true,
       "requires": {
-        "camelcase": "^4.1.0"
+        "camelcase": "^5.0.0",
+        "decamelize": "^1.2.0"
       }
     },
     "yauzl": {
diff --git a/package.json b/package.json
index d023f34f3e..f68d11bb16 100644
--- a/package.json
+++ b/package.json
@@ -62,7 +62,7 @@
     "remix-solidity": "0.3.31",
     "remix-tabs": "1.0.48",
     "remix-tests": "0.1.34",
-    "remixd": "0.1.8-alpha.16",
+    "remixd": "0.2.1-alpha.1",
     "request": "^2.83.0",
     "rimraf": "^2.6.1",
     "selenium-standalone": "^6.17.0",
diff --git a/src/app.js b/src/app.js
index cff9ec03d5..1811ec333a 100644
--- a/src/app.js
+++ b/src/app.js
@@ -5,7 +5,6 @@ var csjs = require('csjs-inject')
 var yo = require('yo-yo')
 var remixLib = require('remix-lib')
 var registry = require('./global/registry')
-var Remixd = require('./lib/remixd')
 var loadFileFromParent = require('./loadFilesFromParent')
 var { OffsetToLineColumnConverter } = require('./lib/offsetToLineColumnConverter')
 var QueryParams = require('./lib/query-params')
@@ -122,6 +121,7 @@ var css = csjs`
 class App {
   constructor (api = {}, events = {}, opts = {}) {
     var self = this
+    self.appManager = new RemixAppManager({})
     self._components = {}
     self._view = {}
     self._view.splashScreen = yo`
@@ -145,14 +145,7 @@ class App {
     self._components.filesProviders = {}
     self._components.filesProviders['browser'] = new FileProvider('browser')
     registry.put({api: self._components.filesProviders['browser'], name: 'fileproviders/browser'})
-
-    var remixd = new Remixd(65520)
-    registry.put({api: remixd, name: 'remixd'})
-    remixd.event.register('system', (message) => {
-      if (message.error) toolTip(message.error)
-    })
-
-    self._components.filesProviders['localhost'] = new RemixDProvider(remixd)
+    self._components.filesProviders['localhost'] = new RemixDProvider(self.appManager)
     registry.put({api: self._components.filesProviders['localhost'], name: 'fileproviders/localhost'})
     registry.put({api: self._components.filesProviders, name: 'fileproviders'})
 
@@ -235,7 +228,7 @@ Please make a backup of your contracts and start using http://remix.ethereum.org
   }
 
   // APP_MANAGER
-  const appManager = new RemixAppManager({})
+  const appManager = self.appManager
   const pluginLoader = appManager.pluginLoader
   const workspace = pluginLoader.get()
   const engine = new Engine(appManager)
diff --git a/src/app/files/file-explorer.js b/src/app/files/file-explorer.js
index 97c016989d..19b678182f 100644
--- a/src/app/files/file-explorer.js
+++ b/src/app/files/file-explorer.js
@@ -102,9 +102,9 @@ function fileExplorer (localRegistry, files, menuItems) {
 
   function fileAdded (filepath) {
     self.ensureRoot(() => {
-      var folderpath = filepath.split('/').slice(0, -1).join('/')
+      const folderpath = filepath.split('/').slice(0, -1).join('/')
+      const currentTree = self.treeView.nodeAt(folderpath)
 
-      var currentTree = self.treeView.nodeAt(folderpath)
       if (currentTree && self.treeView.isExpanded(folderpath)) {
         self.files.resolveDirectory(folderpath, (error, fileTree) => {
           if (error) console.error(error)
@@ -141,10 +141,14 @@ function fileExplorer (localRegistry, files, menuItems) {
   }
 
   function fileRemoved (filepath) {
-    var label = self.treeView.labelAt(filepath)
+    const label = self.treeView.labelAt(filepath)
+    filepath = filepath.split('/').slice(0, -1).join('/')
+
     if (label && label.parentElement) {
       label.parentElement.removeChild(label)
     }
+
+    self.updatePath(filepath)
   }
 
   function fileRenamed (oldName, newName, isFolder) {
@@ -240,15 +244,6 @@ function fileExplorer (localRegistry, files, menuItems) {
 
             if (!removeFolder) {
               tooltip(`failed to remove ${key}. Make sure the directory is empty before removing it.`)
-            } else {
-              const provider = fileManager.currentFileProvider()
-
-              if (provider) {
-                const { type } = provider
-
-                return self.updatePath(type)
-              }
-              self.updatePath('browser')
             }
           }, () => {})
       }
@@ -291,15 +286,6 @@ function fileExplorer (localRegistry, files, menuItems) {
 
             if (!removeFile) {
               tooltip(`Failed to remove file ${key}.`)
-            } else {
-              const provider = fileManager.currentFileProvider()
-
-              if (provider) {
-                const { type } = provider
-
-                return self.updatePath(type)
-              }
-              self.updatePath('browser')
             }
           },
           () => {}
@@ -449,12 +435,12 @@ fileExplorer.prototype.uploadFile = function (event) {
     let files = this.files
     function loadFile () {
       var fileReader = new FileReader()
-      fileReader.onload = function (event) {
+      fileReader.onload = async function (event) {
         if (helper.checkSpecialChars(file.name)) {
           modalDialogCustom.alert('Special characters are not allowed')
           return
         }
-        var success = files.set(name, event.target.result)
+        var success = await files.set(name, event.target.result)
         if (!success) {
           modalDialogCustom.alert('Failed to create file ' + name)
         } else {
diff --git a/src/app/files/fileProvider.js b/src/app/files/fileProvider.js
index 1fa54ab11c..1b02dd398b 100644
--- a/src/app/files/fileProvider.js
+++ b/src/app/files/fileProvider.js
@@ -157,35 +157,38 @@ class FileProvider {
    * @param {*} path is the folder to be removed
    */
   remove (path) {
-    path = this.removePrefix(path)
-    if (window.remixFileSystem.existsSync(path)) {
-      const stat = window.remixFileSystem.statSync(path)
-      try {
-        if (!stat.isDirectory()) {
-          return this.removeFile(path)
-        } else {
-          const items = window.remixFileSystem.readdirSync(path)
-          if (items.length !== 0) {
-            items.forEach((item, index) => {
-              const curPath = `${path}/${item}`
-              if (window.remixFileSystem.statSync(curPath).isDirectory()) { // delete folder
-                this.remove(curPath)
-              } else { // delete file
-                this.removeFile(curPath)
-              }
-            })
-            if (window.remixFileSystem.readdirSync(path).length === 0) window.remixFileSystem.rmdirSync(path, console.log)
+    return new Promise((resolve, reject) => {
+      path = this.removePrefix(path)
+      if (window.remixFileSystem.existsSync(path)) {
+        const stat = window.remixFileSystem.statSync(path)
+        try {
+          if (!stat.isDirectory()) {
+            resolve(this.removeFile(path))
           } else {
-            // folder is empty
-            window.remixFileSystem.rmdirSync(path, console.log)
+            const items = window.remixFileSystem.readdirSync(path)
+            if (items.length !== 0) {
+              items.forEach((item, index) => {
+                const curPath = `${path}/${item}`
+                if (window.remixFileSystem.statSync(curPath).isDirectory()) { // delete folder
+                  this.remove(curPath)
+                } else { // delete file
+                  this.removeFile(curPath)
+                }
+              })
+              if (window.remixFileSystem.readdirSync(path).length === 0) window.remixFileSystem.rmdirSync(path, console.log)
+            } else {
+              // folder is empty
+              window.remixFileSystem.rmdirSync(path, console.log)
+            }
+            this.event.trigger('fileRemoved', [this._normalizePath(path)])
           }
+        } catch (e) {
+          console.log(e)
+          return resolve(false)
         }
-      } catch (e) {
-        console.log(e)
-        return false
       }
-    }
-    return true
+      return resolve(true)
+    })
   }
 
   removeFile (path) {
@@ -219,6 +222,7 @@ class FileProvider {
 
     window.remixFileSystem.readdir(path, (error, files) => {
       var ret = {}
+
       if (files) {
         files.forEach(element => {
           const absPath = (path === '/' ? '' : path) + '/' + element
diff --git a/src/app/files/remixDProvider.js b/src/app/files/remixDProvider.js
index 15df112559..6c43072257 100644
--- a/src/app/files/remixDProvider.js
+++ b/src/app/files/remixDProvider.js
@@ -1,12 +1,10 @@
 'use strict'
 var EventManager = require('../../lib/events')
-var pathtool = require('path')
 
 module.exports = class RemixDProvider {
-  constructor (remixd) {
+  constructor (appManager) {
     this.event = new EventManager()
-    this._remixd = remixd
-    this.remixd = remixapi(remixd, this)
+    this._appManager = appManager
     this.type = 'localhost'
     this.error = { 'EEXIST': 'File already exists' }
     this._isReady = false
@@ -14,39 +12,34 @@ module.exports = class RemixDProvider {
     this._readOnlyMode = false
     this.filesContent = {}
     this.files = {}
+  }
 
+  _registerEvent () {
     var remixdEvents = ['connecting', 'connected', 'errored', 'closed']
     remixdEvents.forEach((value) => {
-      remixd.event.register(value, (event) => {
+      this._appManager.on('remixd', value, (event) => {
         this.event.trigger(value, [event])
       })
     })
 
-    remixd.event.register('notified', (data) => {
-      if (data.scope === 'sharedfolder') {
-        if (data.name === 'created') {
-          this.init(() => {
-            this.event.trigger('fileAdded', [this.type + '/' + data.value.path, data.value.isReadOnly, data.value.isFolder])
-          })
-        } else if (data.name === 'removed') {
-          this.init(() => {
-            this.event.trigger('fileRemoved', [this.type + '/' + data.value.path])
-          })
-        } else if (data.name === 'changed') {
-          this._remixd.call('sharedfolder', 'get', {path: data.value}, (error, content) => {
-            if (error) {
-              console.log(error)
-            } else {
-              var path = this.type + '/' + data.value
-              this.filesContent[path] = content
-              this.event.trigger('fileExternallyChanged', [path, content])
-            }
-          })
-        } else if (data.name === 'rootFolderChanged') {
-          // new path has been set, we should reset
-          this.event.trigger('folderAdded', [this.type + '/'])
-        }
-      }
+    this._appManager.on('remixd', 'folderAdded', (path) => {
+      this.event.trigger('folderAdded', [this.addPrefix(path)])
+    })
+
+    this._appManager.on('remixd', 'fileAdded', (path) => {
+      this.event.trigger('fileAdded', [this.addPrefix(path)])
+    })
+
+    this._appManager.on('remixd', 'fileChanged', (path) => {
+      this.event.trigger('fileChanged', [this.addPrefix(path)])
+    })
+
+    this._appManager.on('remixd', 'fileRemoved', (path) => {
+      this.event.trigger('fileRemoved', [this.addPrefix(path)])
+    })
+
+    this._appManager.on('remixd', 'fileRenamed', (oldPath, newPath) => {
+      this.event.trigger('fileRemoved', [this.addPrefix(oldPath), this.addPrefix(newPath)])
     })
   }
 
@@ -55,38 +48,35 @@ module.exports = class RemixDProvider {
   }
 
   close (cb) {
-    this.remixd.exit()
     this._isReady = false
     cb()
   }
 
   init (cb) {
-    this._remixd.ensureSocket((error) => {
-      if (error) return cb(error)
-      this._isReady = !error
-      this._remixd.call('sharedfolder', 'folderIsReadOnly', {}, (error, result) => {
-        this._readOnlyMode = result
-        cb(error)
-      })
+    if (this._isReady) return cb && cb()
+    this._appManager.call('remixd', 'folderIsReadOnly', {})
+    .then((result) => {
+      this._isReady = true
+      this._readOnlyMode = result
+      this._registerEvent()
+      cb && cb()
+    }).catch((error) => {
+      cb && cb(error)
     })
   }
 
-  // @TODO: refactor all `this._remixd.call(....)` uses into `this.remixd[api](...)`
-  // where `api = ...`:
-  // this.remixd.read(path, (error, content) => {})
-  // this.remixd.write(path, content, (error, result) => {})
-  // this.remixd.rename(path1, path2, (error, result) => {})
-  // this.remixd.remove(path, (error, result) => {})
-  // this.remixd.dir(path, (error, filesList) => {})
-  //
-  // this.remixd.exists(path, (error, isValid) => {})
-
-  async exists (path, cb) {
+  exists (path, cb) {
+    if (!this._isReady) return cb && cb('provider not ready')
     const unprefixedpath = this.removePrefix(path)
-    const callId = await this._remixd.call('sharedfolder', 'exists', {path: unprefixedpath})
-    const result = await this._remixd.receiveResponse(callId)
 
-    return cb(null, result)
+    return this._appManager.call('remixd', 'exists', { path: unprefixedpath })
+    .then((result) => {
+      if (cb) return cb(null, result)
+      return result
+    }).catch((error) => {
+      if (cb) return cb(error)
+      throw new Error(error)
+    })
   }
 
   getNormalizedName (path) {
@@ -98,67 +88,75 @@ module.exports = class RemixDProvider {
   }
 
   get (path, cb) {
+    if (!this._isReady) return cb && cb('provider not ready')
     var unprefixedpath = this.removePrefix(path)
-    this._remixd.call('sharedfolder', 'get', {path: unprefixedpath}, (error, file) => {
-      if (!error) {
-        this.filesContent[path] = file.content
-        if (file.readonly) { this._readOnlyFiles[path] = 1 }
-        cb(error, file.content)
-      } else {
-        // display the last known content.
-        // TODO should perhaps better warn the user that the file is not synced.
-        cb(null, this.filesContent[path])
-      }
+    this._appManager.call('remixd', 'get', { path: unprefixedpath })
+    .then((file) => {
+      this.filesContent[path] = file.content
+      if (file.readonly) { this._readOnlyFiles[path] = 1 }
+      cb(null, file.content)
+    }).catch((error) => {
+      // display the last known content.
+      // TODO should perhaps better warn the user that the file is not synced.
+      if (this.filesContent[path]) return cb(null, this.filesContent[path])
+      else cb(error)
     })
   }
 
-  set (path, content, cb) {
-    var unprefixedpath = this.removePrefix(path)
-    this._remixd.call('sharedfolder', 'set', {path: unprefixedpath, content: content}, (error, result) => {
-      if (cb) return cb(error, result)
-      var path = this.type + '/' + unprefixedpath
-      this.event.trigger('fileChanged', [path])
+  async set (path, content, cb) {
+    if (!this._isReady) return cb && cb('provider not ready')
+    const unprefixedpath = this.removePrefix(path)
+
+    return this._appManager.call('remixd', 'set', { path: unprefixedpath, content: content }).then(async (result) => {
+      if (cb) return cb(null, result)
+    }).catch((error) => {
+      if (cb) return cb(error)
+      throw new Error(error)
     })
-    return true
   }
 
   isReadOnly (path) {
     return this._readOnlyMode || this._readOnlyFiles[path] === 1
   }
 
-  async remove (path) {
-    var unprefixedpath = this.removePrefix(path)
-    const callId = await this._remixd.call('sharedfolder', 'remove', {path: unprefixedpath}, (error, result) => {
-      if (error) console.log(error)
-      var path = this.type + '/' + unprefixedpath
-      delete this.filesContent[path]
-      this.init(() => {
-        this.event.trigger('fileRemoved', [path])
+  remove (path) {
+    return new Promise((resolve, reject) => {
+      if (!this._isReady) return reject('provider not ready')
+      const unprefixedpath = this.removePrefix(path)
+      this._appManager.call('remixd', 'remove', { path: unprefixedpath })
+      .then(result => {
+        const path = this.type + '/' + unprefixedpath
+
+        delete this.filesContent[path]
+        resolve(true)
+        this.init()
+      }).catch(error => {
+        if (error) console.log(error)
+        resolve(false)
       })
     })
-
-    return await this._remixd.receiveResponse(callId)
   }
 
   rename (oldPath, newPath, isFolder) {
-    var unprefixedoldPath = this.removePrefix(oldPath)
-    var unprefixednewPath = this.removePrefix(newPath)
-    this._remixd.call('sharedfolder', 'rename', {oldPath: unprefixedoldPath, newPath: unprefixednewPath}, (error, result) => {
-      if (error) {
-        console.log(error)
-        if (this.error[error.code]) error = this.error[error.code]
-        this.event.trigger('fileRenamedError', [this.error[error.code]])
-      } else {
-        var newPath = this.type + '/' + unprefixednewPath
-        var oldPath = this.type + '/' + unprefixedoldPath
-        this.filesContent[newPath] = this.filesContent[oldPath]
-        delete this.filesContent[oldPath]
-        this.init(() => {
-          this.event.trigger('fileRenamed', [oldPath, newPath, isFolder])
-        })
-      }
+    const unprefixedoldPath = this.removePrefix(oldPath)
+    const unprefixednewPath = this.removePrefix(newPath)
+    if (!this._isReady) return new Promise((resolve, reject) => reject('provider not ready'))
+    return this._appManager.call('remixd', 'rename', { oldPath: unprefixedoldPath, newPath: unprefixednewPath })
+    .then(result => {
+      const newPath = this.type + '/' + unprefixednewPath
+      const oldPath = this.type + '/' + unprefixedoldPath
+
+      this.filesContent[newPath] = this.filesContent[oldPath]
+      delete this.filesContent[oldPath]
+      this.init(() => {
+        this.event.trigger('fileRenamed', [oldPath, newPath, isFolder])
+      })
+      return result
+    }).catch(error => {
+      console.log(error)
+      if (this.error[error.code]) error = this.error[error.code]
+      this.event.trigger('fileRenamedError', [this.error[error.code]])
     })
-    return true
   }
 
   isExternalFolder (path) {
@@ -171,56 +169,33 @@ module.exports = class RemixDProvider {
     return path
   }
 
+  addPrefix (path) {
+    if (path.indexOf(this.type + '/') === 0) return path
+    if (path[0] === '/') return 'localhost' + path
+    return 'localhost/' + path
+  }
+
   resolveDirectory (path, callback) {
     var self = this
     if (path[0] === '/') path = path.substring(1)
     if (!path) return callback(null, { [self.type]: { } })
-    path = self.removePrefix(path)
-    self.remixd.dir(path, callback)
+    const unprefixedpath = this.removePrefix(path)
+
+    if (!this._isReady) return callback && callback('provider not ready')
+    this._appManager.call('remixd', 'resolveDirectory', { path: unprefixedpath }).then((result) => {
+      callback(null, result)
+    }).catch(callback)
   }
 
   async isDirectory (path) {
     const unprefixedpath = this.removePrefix(path)
-    const callId = await this._remixd.call('sharedfolder', 'isDirectory', {path: unprefixedpath})
-
-    return await this._remixd.receiveResponse(callId)
+    if (!this._isReady) throw new Error('provider not ready')
+    return await this._appManager.call('remixd', 'isDirectory', {path: unprefixedpath})
   }
 
   async isFile (path) {
     const unprefixedpath = this.removePrefix(path)
-    const callId = await this._remixd.call('sharedfolder', 'isFile', {path: unprefixedpath})
-
-    return await this._remixd.receiveResponse(callId)
+    if (!this._isReady) throw new Error('provider not ready')
+    return await this._appManager.call('remixd', 'isFile', { path: unprefixedpath })
   }
 }
-
-function remixapi (remixd, self) {
-  const read = (path, callback) => {
-    path = '' + (path || '')
-    path = pathtool.join('./', path)
-    remixd.call('sharedfolder', 'get', { path }, (error, content) => callback(error, content))
-  }
-  const write = (path, content, callback) => {
-    path = '' + (path || '')
-    path = pathtool.join('./', path)
-    remixd.call('sharedfolder', 'set', { path, content }, (error, result) => callback(error, result))
-  }
-  const rename = (path, newpath, callback) => {
-    path = '' + (path || '')
-    path = pathtool.join('./', path)
-    remixd.call('sharedfolder', 'rename', { oldPath: path, newPath: newpath }, (error, result) => callback(error, result))
-  }
-  const remove = (path, callback) => {
-    path = '' + (path || '')
-    path = pathtool.join('./', path)
-    remixd.call('sharedfolder', 'remove', { path }, (error, result) => callback(error, result))
-  }
-  const dir = (path, callback) => {
-    path = '' + (path || '')
-    path = pathtool.join('./', path)
-    remixd.call('sharedfolder', 'resolveDirectory', { path }, (error, filesList) => callback(error, filesList))
-  }
-  const exit = () => { remixd.close() }
-  const api = { read, write, rename, remove, dir, exit, event: remixd.event }
-  return api
-}
diff --git a/src/app/files/remixd-handle.js b/src/app/files/remixd-handle.js
index 62a9ecf515..bd08cb4829 100644
--- a/src/app/files/remixd-handle.js
+++ b/src/app/files/remixd-handle.js
@@ -1,5 +1,5 @@
 import isElectron from 'is-electron'
-import { Plugin } from '@remixproject/engine'
+import { WebsocketPlugin } from '@remixproject/engine'
 import * as packageJson from '../../../package.json'
 var yo = require('yo-yo')
 var modalDialog = require('../ui/modaldialog')
@@ -20,14 +20,15 @@ var css = csjs`
 
 const profile = {
   name: 'remixd',
-  methods: [],
+  url: 'ws://127.0.0.1:65520',
+  methods: ['folderIsReadOnly', 'resolveDirectory', 'get', 'exists', 'isFile', 'set', 'rename', 'remove', 'isDirectory', 'list'],
   events: [],
   description: 'Using Remixd daemon, allow to access file system',
   kind: 'other',
   version: packageJson.version
 }
 
-export class RemixdHandle extends Plugin {
+export class RemixdHandle extends WebsocketPlugin {
   constructor (fileSystemExplorer, locahostProvider, appManager) {
     super(profile)
     this.fileSystemExplorer = fileSystemExplorer
@@ -36,16 +37,19 @@ export class RemixdHandle extends Plugin {
   }
 
   deactivate () {
+    this.fileSystemExplorer.hide()
+    if (super.socket) super.deactivate()
     this.locahostProvider.close((error) => {
       if (error) console.log(error)
     })
   }
 
   activate () {
+    this.fileSystemExplorer.show()
     this.connectToLocalhost()
   }
 
-  canceled () {
+  async canceled () {
     this.appManager.ensureDeactivated('remixd')
   }
 
@@ -55,7 +59,7 @@ export class RemixdHandle extends Plugin {
     *
     * @param {String} txHash    - hash of the transaction
     */
-  connectToLocalhost () {
+  async connectToLocalhost () {
     let connection = (error) => {
       if (error) {
         console.log(error)
@@ -65,13 +69,11 @@ export class RemixdHandle extends Plugin {
         )
         this.canceled()
       } else {
-        this.fileSystemExplorer.ensureRoot()
+        this.locahostProvider.init(_ => this.fileSystemExplorer.ensureRoot())
       }
     }
     if (this.locahostProvider.isConnected()) {
-      this.locahostProvider.close((error) => {
-        if (error) console.log(error)
-      })
+      this.deactivate()
     } else if (!isElectron()) {
       // warn the user only if he/she is in the browser context
       modalDialog(
@@ -79,7 +81,12 @@ export class RemixdHandle extends Plugin {
         remixdDialog(),
         { label: 'Connect',
           fn: () => {
-            this.locahostProvider.init((error) => connection(error))
+            try {
+              super.activate()
+              setTimeout(() => { connection() }, 2000)
+            } catch (error) {
+              connection(error)
+            }
           }
         },
         { label: 'Cancel',
@@ -89,7 +96,12 @@ export class RemixdHandle extends Plugin {
         }
       )
     } else {
-      this.locahostProvider.init((error) => connection(error))
+      try {
+        super.activate()
+        setTimeout(() => { connection() }, 2000)
+      } catch (error) {
+        connection(error)
+      }
     }
   }
 }
diff --git a/test-browser/tests/fileManager_api.test.js b/test-browser/tests/fileManager_api.test.js
index 681d354d2b..884d432ed4 100644
--- a/test-browser/tests/fileManager_api.test.js
+++ b/test-browser/tests/fileManager_api.test.js
@@ -86,7 +86,7 @@ module.exports = {
     .addFile('removeFile.js', { content: executeRemove })
     .executeScript(`remix.exeCurrent()`)
     .pause(2000)
-    .waitForElementNotVisible('[data-id="treeViewLibrowser/old_contract.sol"]')
+    .waitForElementNotPresent('[data-id="treeViewLibrowser/old_contract.sol"]')
     .end()
   },