diff --git a/src/package.json b/src/package.json
index 82fef07..15c50b5 100644
--- a/src/package.json
+++ b/src/package.json
@@ -4,7 +4,7 @@
   "dependencies": {
     "@rails/ujs": "^6.1.4",
     "@rails/webpacker": "5.4.0",
-    "codemirror": "^5.62.3"
+    "codemirror": "^5.65.6"
   },
   "version": "0.1.0",
   "devDependencies": {
diff --git a/src/yarn.lock b/src/yarn.lock
index bad4fd3..7c77478 100644
--- a/src/yarn.lock
+++ b/src/yarn.lock
@@ -1938,10 +1938,10 @@ coa@^2.0.2:
     chalk "^2.4.1"
     q "^1.1.2"
 
-codemirror@^5.62.3:
-  version "5.62.3"
-  resolved "https://registry.yarnpkg.com/codemirror/-/codemirror-5.62.3.tgz#5cfdee6931c8b2d1b39ae773aaaaec2cc6b5558e"
-  integrity sha512-zZAyOfN8TU67ngqrxhOgtkSAGV9jSpN1snbl8elPtnh9Z5A11daR405+dhLzLnuXrwX0WCShWlybxPN3QC/9Pg==
+codemirror@^5.65.6:
+  version "5.65.6"
+  resolved "https://registry.yarnpkg.com/codemirror/-/codemirror-5.65.6.tgz#fc313797331cbeb3bcab0652d1ec9d0f40c23ab5"
+  integrity sha512-zNihMSMoDxK9Gqv9oEyDT8oM51rcRrQ+IEo2zyS48gJByBq5Fj8XuNEguMra+MuIOuh6lkpnLUJeL70DoTt6yw==
 
 collection-visit@^1.0.0:
   version "1.0.0"