diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index a858ac5a..340b9cf7 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -27,8 +27,8 @@ jobs:
         uses: fabiocaccamo/create-matrix-action@v5
         with:
           matrix: |
-            os {linux},   cpu {amd64}, builder {ubuntu-latest-amd64-8vcpu},   tests {integration}, nim_version {${{ env.nim_version }}}, shell {bash --noprofile --norc -e -o pipefail}
-            os {windows}, cpu {amd64}, builder {windows-latest-amd64-8vcpu}, tests {integration}, nim_version {${{ env.nim_version }}}, shell {msys2}
+            os {linux},   cpu {amd64}, builder {ubuntu-latest-amd64-32vcpu},   tests {integration}, nim_version {${{ env.nim_version }}}, shell {bash --noprofile --norc -e -o pipefail}
+
 
   build:
     needs: matrix