diff --git a/package-lock.json b/package-lock.json
index 43f8e37..c6a8b4f 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -2202,9 +2202,9 @@
       "dev": true
     },
     "codemirror": {
-      "version": "5.46.0",
-      "resolved": "https://registry.npmjs.org/codemirror/-/codemirror-5.46.0.tgz",
-      "integrity": "sha512-3QpMge0vg4QEhHW3hBAtCipJEWjTJrqLLXdIaWptJOblf1vHFeXLNtFhPai/uX2lnFCehWNk4yOdaMR853Z02w=="
+      "version": "5.58.2",
+      "resolved": "https://registry.npmjs.org/codemirror/-/codemirror-5.58.2.tgz",
+      "integrity": "sha512-K/hOh24cCwRutd1Mk3uLtjWzNISOkm4fvXiMO7LucCrqbh6aJDdtqUziim3MZUI6wOY0rvY1SlL1Ork01uMy6w=="
     },
     "collection-visit": {
       "version": "1.0.0",
diff --git a/package.json b/package.json
old mode 100755
new mode 100644
index 27c1084..b75064f
--- a/package.json
+++ b/package.json
@@ -49,7 +49,7 @@
     "@dekk/speaker-notes": "^2.0.0-2",
     "@dekk/text": "^2.0.0-2",
     "@dekk/url": "^2.0.0-2",
-    "codemirror": "^5.36.0",
+    "codemirror": "^5.58.2",
     "react": "^16.2.0",
     "react-dom": "^16.2.0",
     "react-player": "^1.6.6",
diff --git a/yarn.lock b/yarn.lock
index 0da1fd3..0534bcb 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1450,9 +1450,9 @@ code-point-at@^1.0.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/code-point-at/-/code-point-at-1.1.0.tgz#0d070b4d043a5bea33a2f1a40e2edb3d9a4ccf77"
 
-codemirror@^5.36.0:
-  version "5.40.2"
-  resolved "https://registry.yarnpkg.com/codemirror/-/codemirror-5.40.2.tgz#f4a41fee2d84e679543591b3680af259d903330b"
+codemirror@^5.36.0, codemirror@^5.58.2:
+  version "5.58.2"
+  resolved "https://registry.yarnpkg.com/codemirror/-/codemirror-5.58.2.tgz#ed54a1796de1498688bea1cdd4e9eeb187565d1b"
 
 collection-visit@^1.0.0:
   version "1.0.0"