diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index b186518..f3e16a8 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -24,7 +24,7 @@ jobs:
     steps:
       - uses: actions/checkout@v6
       - name: Test plugin
-        uses: asdf-vm/actions/plugin-test@v3
+        uses: asdf-vm/actions/plugin-test@v4
         with:
           command: ruby -v
 
diff --git a/bin/download b/bin/download
new file mode 100755
index 0000000..a02f320
--- /dev/null
+++ b/bin/download
@@ -0,0 +1,4 @@
+#!/usr/bin/env bash
+
+# This download callback is no-op because ruby-build does not provide a way to
+# download Ruby without compiling or installing it.