diff --git a/.github/workflows/cmake.yml b/.github/workflows/cmake.yml
index aa6b2c62..2a0fab3e 100644
--- a/.github/workflows/cmake.yml
+++ b/.github/workflows/cmake.yml
@@ -17,7 +17,7 @@ jobs:
     - uses: actions/checkout@v2
 
     - name: Configure CMake
-      run: cmake -B build -DCMAKE_BUILD_TYPE=${{matrix.BUILD_TYPE}} -DRAPIDFUZZ_BUILD_TESTING=1 -DRAPIDFUZZ_ENABLE_LINTERS=1 -DRAPIDFUZZ_BUILD_FUZZERS=1 -DCMAKE_CXX_COMPILER=clang++
+      run: cmake -B build -DCMAKE_BUILD_TYPE=${{matrix.BUILD_TYPE}} -DRAPIDFUZZ_BUILD_TESTING=1 -DRAPIDFUZZ_ENABLE_LINTERS=1 -DRAPIDFUZZ_BUILD_FUZZERS=1 -DCMAKE_CXX_COMPILER=clang++ CMAKE_CXX_FLAGS="-stdlib=libc++ -std=c++20"
 
     - name: Build
       run: cmake --build build --config ${{matrix.BUILD_TYPE}}