diff --git a/.github/workflows/build-python-packages.yml b/.github/workflows/build-python-packages.yml
index af040ba..4939acd 100644
--- a/.github/workflows/build-python-packages.yml
+++ b/.github/workflows/build-python-packages.yml
@@ -36,8 +36,7 @@ jobs:
 
    steps:
      - name: Install PowerShell
-       shell: bash
-       run: |
+     - run: |
           Set-ExecutionPolicy Bypass -Scope Process -Force
           [System.Net.ServicePointManager]::SecurityProtocol = [System.Net.ServicePointManager]::SecurityProtocol -bor 3072
           iex ((New-Object System.Net.WebClient).DownloadString('https://chocolatey.org/install.ps1'))
@@ -45,7 +44,7 @@ jobs:
           choco install -y git.install
           'C:\Program Files\PowerShell\7\' | Out-File $env:GITHUB_PATH -Append
           'C:\Program Files\Git\bin' | Out-File $env:GITHUB_PATH -Append
-          
+          shell: powershell
       
  generate_matrix:
     runs-on: ubuntu-latest