diff --git a/package.json b/package.json
index 80c12c8f4e..48a01e9b5f 100644
--- a/package.json
+++ b/package.json
@@ -46,6 +46,7 @@
     "request": "^2.83.0",
     "rimraf": "^2.6.1",
     "selenium-standalone": "^6.0.1",
+    "solc": "^0.5.0",
     "standard": "^8.5.0",
     "swarmgw": "^0.3.1",
     "tape": "^4.5.1",