diff --git a/package.json b/package.json
index 3cd6103..d8e3b3a 100644
--- a/package.json
+++ b/package.json
@@ -38,7 +38,7 @@
     "@typescript-eslint/rule-tester": "7.0.2",
     "skuba": "7.4.1",
     "zod": "3.23.8",
-    "zod-openapi": "2.13.0"
+    "zod-openapi": "2.18.0"
   },
   "packageManager": "pnpm@8.15.1",
   "engines": {
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index e7f57fc..b009b63 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -23,8 +23,8 @@ devDependencies:
     specifier: 3.23.8
     version: 3.23.8
   zod-openapi:
-    specifier: 2.13.0
-    version: 2.13.0(zod@3.23.8)
+    specifier: 2.18.0
+    version: 2.18.0(zod@3.23.8)
 
 packages:
 
@@ -7335,8 +7335,8 @@ packages:
     engines: {node: '>=12.20'}
     dev: true
 
-  /zod-openapi@2.13.0(zod@3.23.8):
-    resolution: {integrity: sha512-BHkYeCQkMQaQb264oeeLm9zjmKIvAtDNv/IOPIIiso3s5/YGOSRm6CzEbqDn286W6zA4UYeUd8M/dpWld3/ZVg==}
+  /zod-openapi@2.18.0(zod@3.23.8):
+    resolution: {integrity: sha512-+NSd+hG8JFzsmrfYSmbCp4TFCGq9YH6R/3qmD6WnF1ywomgpwxWv6lDg1yrXg0z80p6DPQrsII+V02vWaMHG7A==}
     engines: {node: '>=16.11'}
     peerDependencies:
       zod: ^3.21.4