diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 1dab49c..0acb446 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -11,15 +11,9 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [windows-latest, macos-10.15, ubuntu-18.04]
+        os: [windows-latest, macos-10.15]
 
     steps:
-    - name: configure
-      run: |
-         if [ "$RUNNER_OS" == "Linux" ]; then
-          export CXX=g++-8
-         fi
-      shell: bash
     - uses: actions/checkout@v2
     - name: Build
       run: cmake -S. -Bbin && cmake --build bin --config $BUILD_TYPE