diff --git a/cli.ts b/cli.ts
index 1dff165..d186214 100644
--- a/cli.ts
+++ b/cli.ts
@@ -1,4 +1,4 @@
-import { Command } from "https://deno.land/x/cliffy@v0.25.7/command/mod.ts";
+import { Command } from "https://deno.land/x/cliffy@v1.0.0-rc.1/command/mod.ts";
 import { basename, join } from "https://deno.land/std@0.192.0/path/mod.ts";
 import { findAndReplace } from "./change.ts";
 
diff --git a/test/regex.test.ts b/test/regex.test.ts
index 798462c..3379f03 100644
--- a/test/regex.test.ts
+++ b/test/regex.test.ts
@@ -2,7 +2,7 @@ import { apply } from "../regex.ts";
 import { assertEquals } from "https://deno.land/std@0.192.0/testing/asserts.ts";
 
 Deno.test("Removal works (deno.land/x)", () => {
-  const url = "https://deno.land/x/cliffy@v0.25.7/mod.ts";
+  const url = "https://deno.land/x/cliffy@v1.0.0-rc.1/mod.ts";
 
   assertEquals(apply(url), "https://deno.land/x/cliffy/mod.ts"); // i-deno-outdated
 });