diff --git a/.drone.yml b/.drone.yml
index fc41ff9eb3f..4c4fadc97be 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -164,8 +164,13 @@ pipeline:
       event: [ tag ]
       branch: [ refs/tags/* ]
 
-  gitter:
-    image: plugins/gitter
+  discord:
+    image: appleboy/drone-discord
+    webhook_id: ${WEBHOOK_ID}
+    webhook_token: ${WEBHOOK_TOKEN}
+    when:
+      event: [ push, tag, pull_request ]
+      status: [ failure ]
 
 services:
   mysql:
diff --git a/.drone.yml.sig b/.drone.yml.sig
index ff66f929729..32bce77d09f 100644
--- a/.drone.yml.sig
+++ b/.drone.yml.sig
@@ -1 +1 @@
-eyJhbGciOiJIUzI1NiJ9.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.fKEXrdnpGrjONXncB4dsRdzwKcL2jVblFHmgMCrRPn8
\ No newline at end of file
+eyJhbGciOiJIUzI1NiJ9.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.wvpBGtOzWt2JwgJaUj3yFBa0fgrvUWksa0j97dpZhsE
\ No newline at end of file
diff --git a/.editorconfig b/.editorconfig
index 12b242448ba..cbbb1066182 100644
--- a/.editorconfig
+++ b/.editorconfig
@@ -15,10 +15,14 @@ indent_size = 8
 indent_style = tab
 indent_size = 4
 
-[*.{less,yml}]
+[*.{less}]
 indent_style = space
 indent_size = 4
 
+[*.{yml}]
+indent_style = space
+indent_size = 2
+
 [*.js]
 indent_style = space
 indent_size = 4