diff --git a/packages/netlify-cms-app/package.json b/packages/netlify-cms-app/package.json
index a1f83b751b43..7c12424bde04 100644
--- a/packages/netlify-cms-app/package.json
+++ b/packages/netlify-cms-app/package.json
@@ -29,7 +29,7 @@
   "dependencies": {
     "@emotion/core": "^10.0.35",
     "@emotion/styled": "^10.0.27",
-    "codemirror": "^5.46.0",
+    "codemirror": "^6.0.0",
     "immutable": "^3.7.6",
     "lodash": "^4.17.11",
     "moment": "^2.24.0",