diff --git a/package.json b/package.json
index 62fac3c1d8..a43fa9ecff 100644
--- a/package.json
+++ b/package.json
@@ -33,7 +33,7 @@
     "gulp-rename": "^1.2.2",
     "gulp-replace": "^0.5.4",
     "gulp-run": "^1.6.8",
-    "gulp-sass": "^2.0.4",
+    "gulp-sass": "^5.0.0",
     "gulp-uglify": "^1.2.0",
     "gulp-util": "^3.0.5",
     "jodoc": "git+https://github.com/kant2002/jodoc-js.git",
@@ -41,7 +41,7 @@
     "less": "^2.5.1",
     "ncp": "^2.0.0",
     "node-dir": "^0.1.6",
-    "node-sass": "^3.4.1",
+    "node-sass": "^7.0.2",
     "optimist": "^0.6.1",
     "preact": "^8.2.5",
     "preact-compat": "^3.17.0",