diff --git a/.github/workflows/piranha.yml b/.github/workflows/piranha.yml
index 26e6d7f..e84c1b9 100644
--- a/.github/workflows/piranha.yml
+++ b/.github/workflows/piranha.yml
@@ -10,7 +10,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: ["ubuntu-latest","macos-latest"]
+        os: ["ubuntu-latest"]
     steps:
       - uses: actions/checkout@v2
       - uses: conda-incubator/setup-miniconda@v2