diff --git a/packages/toolpad-app/package.json b/packages/toolpad-app/package.json
index a52bba2f6c9..df4aacf505e 100644
--- a/packages/toolpad-app/package.json
+++ b/packages/toolpad-app/package.json
@@ -71,7 +71,7 @@
     "json-to-ts": "^1.7.0",
     "json5": "^2.2.1",
     "lodash-es": "^4.17.21",
-    "monaco-editor": "0.34.0-dev.20220725",
+    "monaco-editor": "0.34.0",
     "next": "12.2.0",
     "node-fetch": "^2.6.7",
     "node-fetch-har": "^1.0.1",
diff --git a/packages/toolpad-app/src/components/MonacoEditor.tsx b/packages/toolpad-app/src/components/MonacoEditor.tsx
index 18fcd6745df..319f3d1936d 100644
--- a/packages/toolpad-app/src/components/MonacoEditor.tsx
+++ b/packages/toolpad-app/src/components/MonacoEditor.tsx
@@ -44,7 +44,7 @@ function getExtension(language: string): string {
 
 declare global {
   interface Window {
-    MonacoEnvironment: monaco.Environment;
+    MonacoEnvironment?: monaco.Environment | undefined;
   }
 }
 
diff --git a/yarn.lock b/yarn.lock
index 2f974cd896c..d4f03048e55 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -9039,10 +9039,10 @@ modify-values@^1.0.0:
   resolved "https://registry.yarnpkg.com/modify-values/-/modify-values-1.0.1.tgz#b3939fa605546474e3e3e3c63d64bd43b4ee6022"
   integrity sha512-xV2bxeN6F7oYjZWTe/YPAy6MN2M+sL4u/Rlm2AHCIVGfo2p1yGmBHQ6vHehl4bRTZBdHu3TSkWdYgkwpYzAGSw==
 
-monaco-editor@0.34.0-dev.20220725:
-  version "0.34.0-dev.20220725"
-  resolved "https://registry.yarnpkg.com/monaco-editor/-/monaco-editor-0.34.0-dev.20220725.tgz#79e6bdef9dd3e1e5a66ebbbef549604064695b22"
-  integrity sha512-MiuJINwVQyqEEieWQ2NEcapjmi2MiAibthhpK2Tj2pd5tMHtZMO2PpoAKQla1cwxfhTlkb7e+cv0a+CN7Cl67A==
+monaco-editor@0.34.0:
+  version "0.34.0"
+  resolved "https://registry.yarnpkg.com/monaco-editor/-/monaco-editor-0.34.0.tgz#b1749870a1f795dbfc4dc03d8e9b646ddcbeefa7"
+  integrity sha512-VF+S5zG8wxfinLKLrWcl4WUizMx+LeJrG4PM/M78OhcwocpV0jiyhX/pG6Q9jIOhrb/ckYi6nHnaR5OojlOZCQ==
 
 mrmime@^1.0.0:
   version "1.0.1"