diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index c68b0ed..20027fa 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -13,10 +13,15 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ ubuntu-20.04, macos-latest ]
+        os: [ ubuntu-20.04 ]
         smalltalk: [ GemStone64-3.7.0, GemStone64-3.6.7, GemStone64-3.5.8 ]
+        include: 
+          - smalltalk: GemStone64-3.6.7
+            os: macos-latest
+        include: 
+          - smalltalk: GemStone64-3.5.8
+            os: macos-latest
     runs-on: ${{ matrix.os }}
-    name: ${{ matrix.smalltalk }}
     steps:
       - uses: actions/checkout@v2
       - uses: dalehenrich/setup-smalltalkCI@solo