diff --git a/.github/workflows/deploy-pypi.yml b/.github/workflows/deploy-pypi.yml
index 45b98f24..fb1e95dc 100644
--- a/.github/workflows/deploy-pypi.yml
+++ b/.github/workflows/deploy-pypi.yml
@@ -158,14 +158,14 @@ jobs:
             exit 1
           fi
 
-          winget install --id WiXToolset.WiXCLI -e --source winget --accept-package-agreements --accept-source-agreements
+          winget install --id WiXToolset.WiXCLI --version 6.0.2.0 -e --source winget --accept-package-agreements --accept-source-agreements
           echo "C:/Program Files/WiX Toolset v6.0/bin" >> $GITHUB_PATH
           echo "C:/Program Files/WiX Toolset v6.0/bin/${toolset_arch}" >> $GITHUB_PATH
         if: runner.os == 'Windows'
       - name: Check Windows dependencies
         run: |
           wix --version
-          wix extension add WixToolset.UI.wixext
+          wix extension add WixToolset.UI.wixext/6.0.2
         if: runner.os == 'Windows'
       - name: Set up Python for Windows7
         uses: LorenEteval/setup-python-win7@v1