diff --git a/backend/package-lock.json b/backend/package-lock.json
index 38a77561..deb5e6a3 100644
--- a/backend/package-lock.json
+++ b/backend/package-lock.json
@@ -11,7 +11,7 @@
       "license": "AGPL-3.0-only",
       "dependencies": {
         "@anthropic-ai/sdk": "^0.111.0",
-        "@asteasolutions/zod-to-openapi": "^7.3.4",
+        "@asteasolutions/zod-to-openapi": "^9.1.0",
         "@kenjiuno/msgreader": "^1.28.0",
         "@prisma/client": "^5.7.0",
         "archiver": "^7.0.1",
@@ -97,15 +97,15 @@
       }
     },
     "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/backend/package.json b/backend/package.json
index 3bdb39e5..5ce7497e 100644
--- a/backend/package.json
+++ b/backend/package.json
@@ -44,7 +44,7 @@
   "license": "AGPL-3.0-only",
   "dependencies": {
     "@anthropic-ai/sdk": "^0.111.0",
-    "@asteasolutions/zod-to-openapi": "^7.3.4",
+    "@asteasolutions/zod-to-openapi": "^9.1.0",
     "@kenjiuno/msgreader": "^1.28.0",
     "@prisma/client": "^5.7.0",
     "archiver": "^7.0.1",