diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index b86ea6d..751ba4e 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -8,7 +8,6 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-#        os: [ubuntu-latest, windows-latest, macOS-latest]
         os: [ubuntu-18.04, ubuntu-20.04]
     steps:
     - uses: actions/checkout@v2