diff --git a/packages/codemirror-extension/package.json b/packages/codemirror-extension/package.json
index 7a8edb94dd32..518b720d763b 100644
--- a/packages/codemirror-extension/package.json
+++ b/packages/codemirror-extension/package.json
@@ -47,7 +47,7 @@
     "@jupyterlab/statusbar": "^4.0.0-alpha.6",
     "@jupyterlab/translation": "^4.0.0-alpha.6",
     "@lumino/widgets": "^1.31.1",
-    "codemirror": "~5.61.0"
+    "codemirror": "~6.0.0"
   },
   "devDependencies": {
     "rimraf": "~3.0.0",