diff --git a/.appveyor.yml b/.appveyor.yml
index 2a6601320..30987e2e7 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -38,5 +38,5 @@ on_failure:
 environment:
   matrix:
     - ruby_version: "head"
-      RUBYDOWNLOAD: x86
+      RUBYDOWNLOAD: x64
     - ruby_version: "30-x64"