diff --git a/package-lock.json b/package-lock.json
index 6ab9bf6..5cc3f57 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -28,7 +28,7 @@
         "supertest": "^7.1.4",
         "supertest-koa-agent": "^0.3.0",
         "tsd": "^0.30.3",
-        "typescript": "^3.4.5"
+        "typescript": "^5.9.3"
       },
       "engines": {
         "node": ">=18"
@@ -5060,16 +5060,17 @@
       }
     },
     "node_modules/typescript": {
-      "version": "3.9.10",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.9.10.tgz",
-      "integrity": "sha512-w6fIxVE/H1PkLKcCPsFqKE7Kv7QUwhU8qQY2MueZXWx5cPZdwFupLgKK3vntcK98BtNHZtAF4LA/yl2a7k8R6Q==",
+      "version": "5.9.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.9.3.tgz",
+      "integrity": "sha512-jl1vZzPDinLr9eUt3J/t7V6FgNEw9QjvBPdysz9KfQDD41fQrC2Y4vKQdiaUpFT4bXlb1RHhLpp8wtm6M5TgSw==",
       "dev": true,
+      "license": "Apache-2.0",
       "bin": {
         "tsc": "bin/tsc",
         "tsserver": "bin/tsserver"
       },
       "engines": {
-        "node": ">=4.2.0"
+        "node": ">=14.17"
       }
     },
     "node_modules/undici-types": {
diff --git a/package.json b/package.json
index b59995f..1a82a87 100644
--- a/package.json
+++ b/package.json
@@ -42,7 +42,7 @@
     "supertest": "^7.1.4",
     "supertest-koa-agent": "^0.3.0",
     "tsd": "^0.30.3",
-    "typescript": "^3.4.5",
+    "typescript": "^5.9.3",
     "nyc": "^17.1.0"
   },
   "peerDependencies": {