diff --git a/package.json b/package.json
index 5ab91e3..aec04bc 100644
--- a/package.json
+++ b/package.json
@@ -40,7 +40,7 @@
     "less-loader": "^4.1.0",
     "mini-css-extract-plugin": "^0.5.0",
     "optimize-css-assets-webpack-plugin": "^5.0.1",
-    "postcss-flexbugs-fixes": "^4.1.0",
+    "postcss-flexbugs-fixes": "^5.0.1",
     "postcss-loader": "^3.0.0",
     "style-loader": "^0.23.1",
     "uglifyjs-webpack-plugin": "^2.1.1",