diff --git a/UI/WebServerResources/package.json b/UI/WebServerResources/package.json
index 449f4f5c7..1d7cc4d65 100644
--- a/UI/WebServerResources/package.json
+++ b/UI/WebServerResources/package.json
@@ -29,7 +29,7 @@
     "grunt-ng-annotate": "^4.0.0",
     "grunt-postcss": ">=0.6.0",
     "grunt-sass": "^3.1.0",
-    "sass": "^1.57.1",
+    "sass": "1.57.1",
     "time-grunt": "latest"
   },
   "browserslist": [