diff --git a/package-lock.json b/package-lock.json
index 45882f523..0f9334592 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -12,7 +12,7 @@
         "packages/*"
       ],
       "dependencies": {
-        "@asteasolutions/zod-to-openapi": "^7.3.4",
+        "@asteasolutions/zod-to-openapi": "^9.1.0",
         "@google/generative-ai": "^0.24.1",
         "@hono/node-server": "^2.1.1",
         "@hookform/resolvers": "^5.9.1",
@@ -199,15 +199,15 @@
       "license": "ISC"
     },
     "node_modules/@asteasolutions/zod-to-openapi": {
-      "version": "7.3.4",
-      "resolved": "https://registry.npmjs.org/@asteasolutions/zod-to-openapi/-/zod-to-openapi-7.3.4.tgz",
-      "integrity": "sha512-/2rThQ5zPi9OzVwes6U7lK1+Yvug0iXu25olp7S0XsYmOqnyMfxH7gdSQjn/+DSOHRg7wnotwGJSyL+fBKdnEA==",
+      "version": "9.1.0",
+      "resolved": "https://registry.npmjs.org/@asteasolutions/zod-to-openapi/-/zod-to-openapi-9.1.0.tgz",
+      "integrity": "sha512-pLMeRgRYS7/vZIgAAkOe2P6+XGTifR1MT9pqDoxZ11EmcJJ+DPmdPqLN8ZZF4U8R9KHCCQCS9c2wtuE8wSrfkw==",
       "license": "MIT",
       "dependencies": {
-        "openapi3-ts": "^4.1.2"
+        "openapi3-ts": "^4.6.0"
       },
       "peerDependencies": {
-        "zod": "^3.20.2"
+        "zod": "^4.0.0"
       }
     },
     "node_modules/@babel/code-frame": {
diff --git a/package.json b/package.json
index 9b6a66f26..b79e2c4b2 100644
--- a/package.json
+++ b/package.json
@@ -112,7 +112,7 @@
     "type-check:scripts": "tsc --noEmit --skipLibCheck -p tsconfig.scripts.json"
   },
   "dependencies": {
-    "@asteasolutions/zod-to-openapi": "^7.3.4",
+    "@asteasolutions/zod-to-openapi": "^9.1.0",
     "@google/generative-ai": "^0.24.1",
     "@hono/node-server": "^2.1.1",
     "@hookform/resolvers": "^5.9.1",