diff --git a/package.json b/package.json
index 1e1dddca6..176b7bc08 100644
--- a/package.json
+++ b/package.json
@@ -8,7 +8,7 @@
         "@testing-library/jest-dom": "5.11.4",
         "@testing-library/react": "11.0.2",
         "@testing-library/user-event": "12.1.4",
-        "@types/codemirror": "0.0.97",
+        "@types/codemirror": "0.0.98",
         "@types/diff": "4.0.2",
         "@types/emoji-mart": "3.0.2",
         "@types/highlight.js": "9.12.4",
diff --git a/src/external-types/codemirror/addon/display/fullScreen.d.ts b/src/external-types/codemirror/addon/display/fullScreen.d.ts
deleted file mode 100644
index a05ca55d8..000000000
--- a/src/external-types/codemirror/addon/display/fullScreen.d.ts
+++ /dev/null
@@ -1,8 +0,0 @@
-import 'codemirror'
-
-declare module 'codemirror' {
-  // noinspection JSUnusedGlobalSymbols
-  interface EditorConfiguration {
-    fullScreen?: boolean;
-  }
-}
diff --git a/yarn.lock b/yarn.lock
index 142794c66..3d4525d8c 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1728,10 +1728,10 @@
   resolved "https://registry.yarnpkg.com/@types/classnames/-/classnames-2.2.10.tgz#cc658ca319b6355399efc1f5b9e818f1a24bf999"
   integrity sha512-1UzDldn9GfYYEsWWnn/P4wkTlkZDH7lDb0wBMGbtIQc9zXEQq7FlKBdZUn6OBqD8sKZZ2RQO2mAjGpXiDGoRmQ==
 
-"@types/codemirror@0.0.97":
-  version "0.0.97"
-  resolved "https://registry.yarnpkg.com/@types/codemirror/-/codemirror-0.0.97.tgz#6f2d8266b7f1b34aacfe8c77221fafe324c3d081"
-  integrity sha512-n5d7o9nWhC49DjfhsxANP7naWSeTzrjXASkUDQh7626sM4zK9XP2EVcHp1IcCf/IPV6c7ORzDUDF3Bkt231VKg==
+"@types/codemirror@0.0.98":
+  version "0.0.98"
+  resolved "https://registry.yarnpkg.com/@types/codemirror/-/codemirror-0.0.98.tgz#b35c7a4ab1fc1684b08a4e3eb65240020556ebfb"
+  integrity sha512-cbty5LPayy2vNSeuUdjNA9tggG+go5vAxmnLDRWpiZI5a+RDBi9dlozy4/jW/7P/gletbBWbQREEa7A81YxstA==
   dependencies:
     "@types/tern" "*"