diff --git a/functions/package.json b/functions/package.json
index 0cb896a..14ba822 100644
--- a/functions/package.json
+++ b/functions/package.json
@@ -20,6 +20,7 @@
     "firebase-functions": "^4.6.0"
   },
   "devDependencies": {
+    "@tsconfig/node21": "^21.0.1",
     "@types/jest": "^29.5.12",
     "@typescript-eslint/eslint-plugin": "^6.21.0",
     "@typescript-eslint/parser": "^6.21.0",
diff --git a/functions/tsconfig.json b/functions/tsconfig.json
index b8788ef..6c48eb3 100644
--- a/functions/tsconfig.json
+++ b/functions/tsconfig.json
@@ -4,23 +4,16 @@
     "allowJs": false,
     "baseUrl": "./",
     "declaration": true,
-    "esModuleInterop": true,
-    "lib": ["ES2023"],
     "listEmittedFiles": true,
-    "module": "node16",
-    "moduleResolution": "Node16",
     "noFallthroughCasesInSwitch": true,
     "noImplicitReturns": true,
     "noUnusedLocals": true,
     "noUnusedParameters": true,
     "outDir": "lib",
     "removeComments": false,
-    // https://github.com/stephenh/ts-proto/issues/891
-    "skipLibCheck": true,
     "sourceMap": true,
-    "strict": true,
-    "target": "ES2022",
     "types": ["jest"]
   },
-  "exclude": ["node_modules", "lib"]
+  "exclude": ["node_modules", "lib"],
+  "extends": "@tsconfig/node21/tsconfig.json"
 }
diff --git a/functions/yarn.lock b/functions/yarn.lock
index ee05669..ab34711 100644
--- a/functions/yarn.lock
+++ b/functions/yarn.lock
@@ -839,6 +839,11 @@
   resolved "https://registry.yarnpkg.com/@tootallnate/once/-/once-2.0.0.tgz#f544a148d3ab35801c1f633a7441fd87c2e484bf"
   integrity sha512-XCuKFP5PS55gnMVu3dty8KPatLqUoy/ZYzDzAGCQ8JNFCkLXzmI7vNHCR+XpbZaMWQK/vQubr7PkYq8g470J/A==
 
+"@tsconfig/node21@^21.0.1":
+  version "21.0.1"
+  resolved "https://registry.yarnpkg.com/@tsconfig/node21/-/node21-21.0.1.tgz#a26f5ac11eb580bf6da68070f9c6eeccf9bba896"
+  integrity sha512-2Khg79N+z2Qkb9SjLzOi8cz2PSa/oUpHIeQm1YWzmWXkoFcPXFZSHgs+Z8iPCDjIoXFqMNYntiTXxfLYQMcRhw==
+
 "@types/babel__core@^7.1.14":
   version "7.20.5"
   resolved "https://registry.yarnpkg.com/@types/babel__core/-/babel__core-7.20.5.tgz#3df15f27ba85319caa07ba08d0721889bb39c017"