diff --git a/super-mode-calculator/package.json b/super-mode-calculator/package.json
index 001da3e..bfba2cb 100644
--- a/super-mode-calculator/package.json
+++ b/super-mode-calculator/package.json
@@ -18,7 +18,7 @@
   "devDependencies": {
     "@guardian/eslint-config-typescript": "^0.7.0",
     "@guardian/prettier": "^2.1.5",
-    "@types/node": "^16.3.3",
+    "@types/node": "^20.4.2",
     "@typescript-eslint/eslint-plugin": "^4.33.0",
     "@typescript-eslint/parser": "^4.33.0",
     "eslint": "^7.28.0",
diff --git a/super-mode-calculator/yarn.lock b/super-mode-calculator/yarn.lock
index 7eabdd0..13614be 100644
--- a/super-mode-calculator/yarn.lock
+++ b/super-mode-calculator/yarn.lock
@@ -154,10 +154,10 @@
   resolved "https://registry.yarnpkg.com/@types/json-schema/-/json-schema-7.0.8.tgz#edf1bf1dbf4e04413ca8e5b17b3b7d7d54b59818"
   integrity sha512-YSBPTLTVm2e2OoQIDYx8HaeWJ5tTToLH67kXR7zYNGupXMEHa2++G8k+DczX2cFVgalypqtyZIcU19AFcmOpmg==
 
-"@types/node@^16.3.3":
-  version "16.3.3"
-  resolved "https://registry.yarnpkg.com/@types/node/-/node-16.3.3.tgz#0c30adff37bbbc7a50eb9b58fae2a504d0d88038"
-  integrity sha512-8h7k1YgQKxKXWckzFCMfsIwn0Y61UK6tlD6y2lOb3hTOIMlK3t9/QwHOhc81TwU+RMf0As5fj7NPjroERCnejQ==
+"@types/node@^20.4.2":
+  version "20.4.2"
+  resolved "https://registry.yarnpkg.com/@types/node/-/node-20.4.2.tgz#129cc9ae69f93824f92fac653eebfb4812ab4af9"
+  integrity sha512-Dd0BYtWgnWJKwO1jkmTrzofjK2QXXcai0dmtzvIBhcA+RsG5h8R3xlyta0kGOZRNfL9GuRtb1knmPEhQrePCEw==
 
 "@typescript-eslint/eslint-plugin@4.29.2":
   version "4.29.2"