diff --git a/denops/dpp/deps.ts b/denops/dpp/deps.ts
index 909c68a..d6a48dd 100644
--- a/denops/dpp/deps.ts
+++ b/denops/dpp/deps.ts
@@ -26,4 +26,4 @@ export { deadline, DeadlineError } from "jsr:@std/async@0.224.0";
 
 export { TimeoutError } from "https://deno.land/x/msgpack_rpc@v4.0.1/response_waiter.ts";
 export { Lock } from "jsr:@lambdalisue/async@2.1.1";
-export { ensure, is } from "https://deno.land/x/unknownutil@v3.18.0/mod.ts";
+export { ensure, is } from "jsr:@core/unknownutil@3.18.0";