diff --git a/designer/package.json b/designer/package.json
index d1278e2..e7ea378 100644
--- a/designer/package.json
+++ b/designer/package.json
@@ -133,7 +133,7 @@
     "nunjucks": "3.2.1",
     "postcss": "^8.2.4",
     "postcss-loader": "^4.1.0",
-    "prismjs": "1.23.0",
+    "prismjs": "1.29.0",
     "react": "16.13.1",
     "react-dom": "16.13.1",
     "react-simple-code-editor": "0.11.0",