diff --git a/packages/frontend/package-lock.json b/packages/frontend/package-lock.json
index d526cf4..db27816 100644
--- a/packages/frontend/package-lock.json
+++ b/packages/frontend/package-lock.json
@@ -69,9 +69,9 @@
       }
     },
     "codemirror": {
-      "version": "5.53.2",
-      "resolved": "https://registry.npmjs.org/codemirror/-/codemirror-5.53.2.tgz",
-      "integrity": "sha512-wvSQKS4E+P8Fxn/AQ+tQtJnF1qH5UOlxtugFLpubEZ5jcdH2iXTVinb+Xc/4QjshuOxRm4fUsU2QPF1JJKiyXA=="
+      "version": "5.58.2",
+      "resolved": "https://registry.npmjs.org/codemirror/-/codemirror-5.58.2.tgz",
+      "integrity": "sha512-K/hOh24cCwRutd1Mk3uLtjWzNISOkm4fvXiMO7LucCrqbh6aJDdtqUziim3MZUI6wOY0rvY1SlL1Ork01uMy6w=="
     },
     "color-convert": {
       "version": "1.9.3",
diff --git a/packages/frontend/package.json b/packages/frontend/package.json
index f28254b..7a7ebf4 100644
--- a/packages/frontend/package.json
+++ b/packages/frontend/package.json
@@ -21,7 +21,7 @@
     "@babel/polyfill": "^7.8.7",
     "balajs": "^1.0.7",
     "byte-size": "^6.2.0",
-    "codemirror": "^5.53.2",
+    "codemirror": "^5.58.2",
     "diff-match-patch": "^1.0.4",
     "jsonlint-mod": "^1.7.5",
     "seemple": "^2.4.17",