diff --git a/denops/ddc/deps.ts b/denops/ddc/deps.ts
index a123581..27643e1 100644
--- a/denops/ddc/deps.ts
+++ b/denops/ddc/deps.ts
@@ -23,5 +23,5 @@ export { deadline, DeadlineError } from "jsr:@std/async@0.224.0";
 export { spy } from "jsr:@std/testing@0.224.0/mock";
 
 export { TimeoutError } from "https://deno.land/x/msgpack_rpc@v4.0.1/response_waiter.ts";
-export { ensure, is } from "jsr:@core/unknownutil@3.18.0";
+export { ensure, is } from "jsr:@core/unknownutil@3.18.1";
 export { Lock } from "jsr:@lambdalisue/async@2.1.1";