diff --git a/.github/workflows/ubuntu_20.yml b/.github/workflows/ubuntu_20.yml
index a1a6f79..2040484 100644
--- a/.github/workflows/ubuntu_20.yml
+++ b/.github/workflows/ubuntu_20.yml
@@ -46,7 +46,7 @@ jobs:
       - name: Configure CMake
         run: cmake -B ${{github.workspace}}/build/clang_${{env.BUILD_TYPE}} -G"Ninja" -DNUI_ENABLE_TESTS=on -DCMAKE_BUILD_TYPE=${{env.BUILD_TYPE}} -DNUI_BUILD_EXAMPLES=on -DCMAKE_CXX_EXTENSIONS=on -DCMAKE_CXX_COMPILER=c++ -DCMAKE_C_COMPILER=cc -DCMAKE_CXX_STANDARD=20
         env:
-          BOOST_ROOT: ${{ steps.install-boost.outputs.BOOST_ROOT }}
+          Boost_ROOT: ${{ steps.install-boost.outputs.BOOST_ROOT }}
 
       - name: Build
         run: cmake --build ${{github.workspace}}/build/clang_${{env.BUILD_TYPE}} --config ${{env.BUILD_TYPE}}
diff --git a/.github/workflows/ubuntu_22.yml b/.github/workflows/ubuntu_22.yml
index 2d02e2c..7c7077d 100644
--- a/.github/workflows/ubuntu_22.yml
+++ b/.github/workflows/ubuntu_22.yml
@@ -46,7 +46,7 @@ jobs:
       - name: Configure CMake
         run: cmake -B ${{github.workspace}}/build/clang_${{env.BUILD_TYPE}} -G"Ninja" -DNUI_ENABLE_TESTS=on -DCMAKE_BUILD_TYPE=${{env.BUILD_TYPE}} -DNUI_BUILD_EXAMPLES=on -DCMAKE_CXX_FLAGS="-stdlib=libc++" -DCMAKE_CXX_EXTENSIONS=on -DCMAKE_CXX_COMPILER=clang++ -DCMAKE_C_COMPILER=clang -DCMAKE_LINKER=lld -DCMAKE_CXX_STANDARD=20
         env:
-          BOOST_ROOT: ${{ steps.install-boost.outputs.BOOST_ROOT }}
+          Boost_ROOT: ${{ steps.install-boost.outputs.BOOST_ROOT }}
 
       - name: Build
         run: cmake --build ${{github.workspace}}/build/clang_${{env.BUILD_TYPE}} --config ${{env.BUILD_TYPE}}