diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 8308f46..dd304f9 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -28,7 +28,10 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        include: ${{ fromJSON(github.event_name == 'pull_request' && '[{"os":"ubuntu-latest","arch":"x64","version":"1.12"}]' || '[{"os":"ubuntu-latest","arch":"x64","version":"1.12"},{"os":"windows-latest","arch":"x64","version":"1.12"}]') }}
+        include:
+          - os: ubuntu-latest
+            arch: x64
+            version: '1.12'
 
     steps:
       - name: Checkout OMBackend.jl