diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 8f9f5de..34956e2 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -12,13 +12,14 @@ jobs:
     strategy:
       matrix:
         # os: [windows-latest]
-        # os: [windows-latest, ubuntu-18.04]
-        os: [windows-latest, ubuntu-latest, macos-latest]
-        # os: [ubuntu-18.04]
+        # os: [windows-latest, ubuntu-latest]
+        # os: [windows-latest, ubuntu-latest, macos-latest]
+        os: [ubuntu-latest]
     steps:
     - uses: actions/checkout@v1      
     - name: Run Continuous Integration
       shell: pwsh
       run : |
         # ./ContinuousIntegration/ContinuousIntegration.ps1
-        gmo -list pester
\ No newline at end of file
+        cd ./__tests__
+        Invoke-Pester -Output Detailed
\ No newline at end of file