diff --git a/lib/core/package.json b/lib/core/package.json
index 2b451fa0efc..1da3fa05de1 100644
--- a/lib/core/package.json
+++ b/lib/core/package.json
@@ -36,7 +36,7 @@
     "json-loader": "^0.5.7",
     "json5": "^0.5.1",
     "postcss-flexbugs-fixes": "^3.2.0",
-    "postcss-loader": "^2.1.3",
+    "postcss-loader": "^2.1.4",
     "prop-types": "^15.6.1",
     "qs": "^6.5.1",
     "redux": "^3.7.2",