diff --git a/src/acp.ts b/src/acp.ts
index c905041..75ace72 100644
--- a/src/acp.ts
+++ b/src/acp.ts
@@ -1,4 +1,4 @@
-import { z } from "zod";
+import { z } from "zod/v4";
 import * as schema from "./schema/index.js";
 import * as validate from "./schema/zod.gen.js";
 export type * from "./schema/types.gen.js";