diff --git a/demo/package.json b/demo/package.json
index c71f2e96..8f9e7e17 100644
--- a/demo/package.json
+++ b/demo/package.json
@@ -10,7 +10,7 @@
     "@monaco-editor/react": "^4.1.3",
     "classnames": "^2.2.6",
     "mobile-detect": "^1.4.4",
-    "monaco-themes": "^0.3.3",
+    "monaco-themes": "^0.4.4",
     "overmind": "^22.0.5",
     "overmind-react": "^23.0.5",
     "prop-types": "^15.7.2",