diff --git a/core/admin/package.json b/core/admin/package.json
index 384b4466..a6eae07c 100644
--- a/core/admin/package.json
+++ b/core/admin/package.json
@@ -17,7 +17,7 @@
     "babel-loader": "^8.0.6",
     "css-loader": "^2.1.1",
     "expose-loader": "^0.7.5",
-    "less": "^4.1.1",
+    "less": "^3.13.1",
     "less-loader": "^5.0.0",
     "mini-css-extract-plugin": "^1.2.1",
     "node-sass": "^4.13.1",