diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index de920b15..32d506b4 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -31,7 +31,7 @@ jobs:
         run: bash rumale-test.sh
 
   build-win:
-    runs-on: windows-latest
+    runs-on: windows-2019
     name: Ruby 3.2 (Windows)
     steps:
       - uses: actions/checkout@v4