diff --git a/packages/types/package.json b/packages/types/package.json
index 852f7b106..f1e1ec59f 100644
--- a/packages/types/package.json
+++ b/packages/types/package.json
@@ -33,7 +33,7 @@
 		"@types/node": "20.19.43",
 		"globals": "16.3.0",
 		"tsup": "8.5.0",
-		"ajv": "8.18.0",
+		"ajv": "8.20.0",
 		"vitest": "4.1.0",
 		"zod-to-json-schema": "3.25.1"
 	}
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index e4644ffda..47fb22f5b 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -398,8 +398,8 @@ importers:
         specifier: 20.19.43
         version: 20.19.43
       ajv:
-        specifier: 8.18.0
-        version: 8.18.0
+        specifier: 8.20.0
+        version: 8.20.0
       globals:
         specifier: 16.3.0
         version: 16.3.0
@@ -3570,8 +3570,8 @@ packages:
   ajv@6.12.6:
     resolution: {integrity: sha512-j3fVLgvTo527anyYyJOGTYJbG+vnnQYvE0m5mmkc1TK+nxAppkCLMIL0aZ4dblVCNoGShhm+kzE4ZUykBoMg4g==}
 
-  ajv@8.18.0:
-    resolution: {integrity: sha512-PlXPeEWMXMZ7sPYOHqmDyCJzcfNrUr3fGNKtezX14ykXOEIvyK81d+qydx89KY5O71FKMPaQ2vBfBFI5NHR63A==}
+  ajv@8.20.0:
+    resolution: {integrity: sha512-Thbli+OlOj+iMPYFBVBfJ3OmCAnaSyNn4M1vz9T6Gka5Jt9ba/HIR56joy65tY6kx/FCF5VXNB819Y7/GUrBGA==}
 
   ansi-colors@4.1.3:
     resolution: {integrity: sha512-/6w/C21Pm1A7aZitlI5Ni/2J6FFQN8i1Cvz3kHABAAbw93v/NlvKdVOqz7CCWz/3iv/JplRSEEZ83XION15ovw==}
@@ -9815,8 +9815,8 @@ snapshots:
   '@modelcontextprotocol/sdk@1.29.0(zod@3.25.76)':
     dependencies:
       '@hono/node-server': 1.19.14(hono@4.12.23)
-      ajv: 8.18.0
-      ajv-formats: 3.0.1(ajv@8.18.0)
+      ajv: 8.20.0
+      ajv-formats: 3.0.1(ajv@8.20.0)
       content-type: 1.0.5
       cors: 2.8.5
       cross-spawn: 7.0.6
@@ -10679,7 +10679,7 @@ snapshots:
       '@secretlint/profiler': 10.2.2
       '@secretlint/resolver': 10.2.2
       '@secretlint/types': 10.2.2
-      ajv: 8.18.0
+      ajv: 8.20.0
       debug: 4.4.3(supports-color@8.1.1)
       rc-config-loader: 4.1.4
     transitivePeerDependencies:
@@ -11614,9 +11614,9 @@ snapshots:
       '@opentelemetry/api': 1.9.0
       zod: 3.25.76
 
-  ajv-formats@3.0.1(ajv@8.18.0):
+  ajv-formats@3.0.1(ajv@8.20.0):
     optionalDependencies:
-      ajv: 8.18.0
+      ajv: 8.20.0
 
   ajv@6.12.6:
     dependencies:
@@ -11625,7 +11625,7 @@ snapshots:
       json-schema-traverse: 0.4.1
       uri-js: 4.4.1
 
-  ajv@8.18.0:
+  ajv@8.20.0:
     dependencies:
       fast-deep-equal: 3.1.3
       fast-uri: 3.1.0
@@ -16695,7 +16695,7 @@ snapshots:
 
   table@6.9.0:
     dependencies:
-      ajv: 8.18.0
+      ajv: 8.20.0
       lodash.truncate: 4.4.2
       slice-ansi: 4.0.0
       string-width: 4.2.3