diff --git a/package.json b/package.json
index e8d245c325..86321775dd 100644
--- a/package.json
+++ b/package.json
@@ -22,10 +22,12 @@
     "package": "ts-node -P script script/package.ts",
     "generate-octicons": "ts-node script/generate-octicons.ts",
     "compile:script": "tsc -p script",
-    "lint": "yarn lint:src && yarn lint:md:check",
-    "lint:fix": "yarn lint:src:fix && yarn lint:md --write",
+    "lint": "yarn lint:src && yarn lint:md:check && yarn lint:css:check",
+    "lint:fix": "yarn lint:src:fix && yarn lint:md --write && yarn lint:css --write",
     "lint:md": "prettier \"**/*.md\"",
     "lint:md:check": "yarn lint:md --list-different",
+    "lint:css": "prettier \"app/styles/**/*.scss\"",
+    "lint:css:check": "yarn lint:css --list-different",
     "lint:src": "yarn tslint && yarn eslint-check && yarn eslint",
     "lint:src:fix": "yarn tslint --fix && yarn eslint --fix",
     "tslint": "NODE_OPTIONS='-r ts-node/register' tslint ./{script,tslint-rules}/*.ts ./app/{src,typings,test}/**/*.{ts,tsx}",