diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 13408d9..50e56e7 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -48,14 +48,14 @@ jobs:
 
   windows:
     name: Windows
-    runs-on: windows-latest
+    runs-on: windows-2022
     timeout-minutes: 45
     steps:
       - uses: actions/checkout@v4
       - name: Setup Swift
         uses: SwiftyLab/setup-swift@v1.12.0
         with:
-          swift-version: "6.3.2"
+          swift-version: "6.3.1"
       - name: Build and test
         shell: pwsh
         run: ./scripts/check-windows.ps1