diff --git a/package.json b/package.json
index 73dab95a0f..88bac2aaf4 100644
--- a/package.json
+++ b/package.json
@@ -196,7 +196,7 @@
     "cheerio": "^1.0.0-rc.3",
     "concurrently": "^7.0.0",
     "cross-env": "^7.0.0",
-    "css-minimizer-webpack-plugin": "^3.2.0",
+    "css-minimizer-webpack-plugin": "^1.3.0",
     "dekko": "^0.2.1",
     "docsearch-react-fork": "^0.0.0-alpha.0",
     "docsearch.js": "^2.6.3",
@@ -241,7 +241,7 @@
     "jsonml.js": "^0.1.0",
     "less-vars-to-js": "^1.3.0",
     "lz-string": "^1.4.4",
-    "mini-css-extract-plugin": "^2.4.5",
+    "mini-css-extract-plugin": "^1.6.2",
     "mockdate": "^3.0.0",
     "open": "^8.0.1",
     "prettier": "^2.3.2",
@@ -274,12 +274,11 @@
     "remark-cli": "^10.0.0",
     "remark-lint": "^9.0.0",
     "remark-preset-lint-recommended": "^6.0.0",
-    "remove-files-webpack-plugin": "^1.4.5",
+    "remove-files-webpack-plugin": "1.4.4",
     "rimraf": "^3.0.0",
     "scrollama": "^3.0.0",
     "semver": "^7.3.5",
     "simple-git": "^3.0.0",
-    "string-replace-loader": "^3.0.3",
     "stylelint": "^14.0.0",
     "stylelint-config-prettier": "^9.0.2",
     "stylelint-config-rational-order": "^0.1.2",