diff --git a/package-lock.json b/package-lock.json
index a4605e8..1669af7 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -484,9 +484,9 @@
       }
     },
     "typescript": {
-      "version": "3.9.10",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.9.10.tgz",
-      "integrity": "sha512-w6fIxVE/H1PkLKcCPsFqKE7Kv7QUwhU8qQY2MueZXWx5cPZdwFupLgKK3vntcK98BtNHZtAF4LA/yl2a7k8R6Q==",
+      "version": "5.0.4",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.0.4.tgz",
+      "integrity": "sha512-cW9T5W9xY37cc+jfEnaUvX91foxtHkza3Nw3wkoF4sSlKn0MONdkdEndig/qPBWXNkmplh3NzayQzCiHM4/hqw==",
       "dev": true
     },
     "universalify": {
diff --git a/package.json b/package.json
index ce5555e..cb4c40f 100644
--- a/package.json
+++ b/package.json
@@ -17,7 +17,7 @@
     "@teppeis/clutz": "^1.0.27-fb3fc7c.v20190318T233908",
     "google-closure-library": "^20190301.0.0",
     "patch-package": "^6.5.1",
-    "typescript": "^3.9.10"
+    "typescript": "^5.0.4"
   },
   "homepage": "https://github.com/teppeis/closure-library.d.ts",
   "repository": {