diff --git a/package.json b/package.json
index 5726fa3..bbe5c22 100644
--- a/package.json
+++ b/package.json
@@ -22,7 +22,7 @@
     "lodash.union": "^4.6.0",
     "micromatch": "^3.1.4",
     "mkdirp": "^0.5.1",
-    "postcss-loader": "^2.1.6",
+    "postcss-loader": "^3.0.0",
     "reshape-loader": "^1.3.0",
     "rimraf": "^2.6.2",
     "source-loader": "^1.0.0",