diff --git a/src/lab/images/simulation/fineness modulus of cement/csshake-master/csshake-master/package.json b/src/lab/images/simulation/fineness modulus of cement/csshake-master/csshake-master/package.json
index f881106..5d4f265 100644
--- a/src/lab/images/simulation/fineness modulus of cement/csshake-master/csshake-master/package.json	
+++ b/src/lab/images/simulation/fineness modulus of cement/csshake-master/csshake-master/package.json	
@@ -31,7 +31,7 @@
   "homepage": "https://github.com/elrumordelaluz/csshake",
   "devDependencies": {
     "gzip-size-cli": "^1.0.0",
-    "node-sass": "^3.8.0",
+    "node-sass": "^4.14.1",
     "pretty-bytes": "^2.0.1"
   }
 }