diff --git a/package.json b/package.json
index 5e23eea3..b8cce967 100644
--- a/package.json
+++ b/package.json
@@ -16,7 +16,7 @@
 		"test:cov": "vitest run --coverage"
 	},
 	"dependencies": {
-		"@asteasolutions/zod-to-openapi": "7.3.4",
+		"@asteasolutions/zod-to-openapi": "8.5.0",
 		"cors": "2.8.6",
 		"dotenv": "17.3.1",
 		"express": "5.2.1",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 33fdca35..67a69492 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -9,8 +9,8 @@ importers:
   .:
     dependencies:
       '@asteasolutions/zod-to-openapi':
-        specifier: 7.3.4
-        version: 7.3.4(zod@3.25.76)
+        specifier: 8.5.0
+        version: 8.5.0(zod@3.25.76)
       cors:
         specifier: 2.8.6
         version: 2.8.6
@@ -88,10 +88,10 @@ packages:
     resolution: {integrity: sha512-30iZtAPgz+LTIYoeivqYo853f02jBYSd5uGnGpkFV0M3xOt9aN73erkgYAmZU43x4VfqcnLxW9Kpg3R5LC4YYw==}
     engines: {node: '>=6.0.0'}
 
-  '@asteasolutions/zod-to-openapi@7.3.4':
-    resolution: {integrity: sha512-/2rThQ5zPi9OzVwes6U7lK1+Yvug0iXu25olp7S0XsYmOqnyMfxH7gdSQjn/+DSOHRg7wnotwGJSyL+fBKdnEA==}
+  '@asteasolutions/zod-to-openapi@8.5.0':
+    resolution: {integrity: sha512-SABbKiObg5dLRiTFnqiW1WWwGcg1BJfmHtT2asIBnBHg6Smy/Ms2KHc650+JI4Hw7lSkdiNebEGXpwoxfben8Q==}
     peerDependencies:
-      zod: ^3.20.2
+      zod: ^4.0.0
 
   '@babel/helper-string-parser@7.27.1':
     resolution: {integrity: sha512-qMlSxKbpRlAridDExk92nSobyDdpPijUq2DW6oDnUqd0iOGxmQjyqhMIihI9+zv4LPyZdRje2cavWPbCbWm3eA==}
@@ -1767,7 +1767,7 @@ snapshots:
       '@jridgewell/gen-mapping': 0.3.12
       '@jridgewell/trace-mapping': 0.3.29
 
-  '@asteasolutions/zod-to-openapi@7.3.4(zod@3.25.76)':
+  '@asteasolutions/zod-to-openapi@8.5.0(zod@3.25.76)':
     dependencies:
       openapi3-ts: 4.5.0
       zod: 3.25.76