diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index a031b18..f3c522d 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -11,7 +11,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, macos-latest]
-        compiler: [g++]
+        compiler: [g++, clang++]
         flags: [-std=c++11, -std=c++17]
         optimize: [-O2]
     steps:
@@ -22,4 +22,4 @@ jobs:
         CXX: ${{ matrix.compiler }}
         CXXFLAGS: ${{ matrix.flags }} ${{ matrix.optimize }}
       run: |
-        mkdir build && cd build && cmake -DPHMAP_BUILD_TESTS=ON -DPHMAP_BUILD_EXAMPLES=ON -DCMAKE_CXX_COMPILER=${CXX} -DCXXFLAGS="${CXXFLAGS}"  -DCMAKE_VERBOSE_MAKEFILE:BOOL=ON .. && cmake --build . && make test
+        mkdir build && cd build && cmake -DPHMAP_BUILD_TESTS=ON -DPHMAP_BUILD_EXAMPLES=ON -DCMAKE_CXX_COMPILER=${CXX}  -DCMAKE_VERBOSE_MAKEFILE:BOOL=ON .. && cmake --build . && make test