diff --git a/plugins/graphiql/package.json b/plugins/graphiql/package.json
index b5550478bb..dbbf75af70 100644
--- a/plugins/graphiql/package.json
+++ b/plugins/graphiql/package.json
@@ -48,6 +48,7 @@
     "@testing-library/jest-dom": "^4.2.4",
     "@testing-library/react": "^9.3.2",
     "@testing-library/user-event": "^7.1.2",
+    "@types/codemirror": "^0.0.93",
     "@types/jest": "^25.2.1",
     "@types/node": "^12.0.0",
     "@types/testing-library__jest-dom": "^5.0.4",
diff --git a/yarn.lock b/yarn.lock
index 07ab5e1707..856a9f7352 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3720,6 +3720,13 @@
   dependencies:
     "@types/node" "*"
 
+"@types/codemirror@^0.0.93":
+  version "0.0.93"
+  resolved "https://registry.npmjs.org/@types/codemirror/-/codemirror-0.0.93.tgz#74ce5e1132325cb2c88a9bb91fd819294fe0c8ed"
+  integrity sha512-7F2ksY4U5amV/bIkMTev0n22RWcFO2BBuFuFYmAJIT19gr3kDElr1phgjPsNKV/Pj301bujnMjSy5GlWla+cow==
+  dependencies:
+    "@types/tern" "*"
+
 "@types/color-convert@*":
   version "1.9.0"
   resolved "https://registry.npmjs.org/@types/color-convert/-/color-convert-1.9.0.tgz#bfa8203e41e7c65471e9841d7e306a7cd8b5172d"
@@ -4288,6 +4295,13 @@
     "@types/minipass" "*"
     "@types/node" "*"
 
+"@types/tern@*":
+  version "0.23.3"
+  resolved "https://registry.npmjs.org/@types/tern/-/tern-0.23.3.tgz#4b54538f04a88c9ff79de1f6f94f575a7f339460"
+  integrity sha512-imDtS4TAoTcXk0g7u4kkWqedB3E4qpjXzCpD2LU5M5NAXHzCDsypyvXSaG7mM8DKYkCRa7tFp4tS/lp/Wo7Q3w==
+  dependencies:
+    "@types/estree" "*"
+
 "@types/testing-library__cypress@^5.0.3":
   version "5.0.3"
   resolved "https://registry.npmjs.org/@types/testing-library__cypress/-/testing-library__cypress-5.0.3.tgz#94969b7c1eea96e09d8e023a1d225590fa75a1fe"