diff --git a/package.json b/package.json
index e0eff5c7..56d14646 100644
--- a/package.json
+++ b/package.json
@@ -81,7 +81,7 @@
     "case-sensitive-paths-webpack-plugin": "2.4.0",
     "copy-webpack-plugin": "8.1.1",
     "css-loader": "5.2.4",
-    "css-minimizer-webpack-plugin": "2.0.0",
+    "css-minimizer-webpack-plugin": "5.0.0",
     "eventsource-polyfill": "0.9.6",
     "file-loader": "6.2.0",
     "html-webpack-plugin": "5.3.1",
@@ -89,7 +89,7 @@
     "@insin/npm-install-webpack-plugin": "5.0.0",
     "open": "8.0.7",
     "postcss": "8.2.13",
-    "postcss-loader": "5.2.0",
+    "postcss-loader": "7.1.0",
     "style-loader": "2.0.0",
     "terser-webpack-plugin": "5.1.1",
     "url-loader": "4.1.1",