diff --git a/.github/workflows/build-windows.yml b/.github/workflows/build-windows.yml
index e1cd3bd9..b715e01d 100644
--- a/.github/workflows/build-windows.yml
+++ b/.github/workflows/build-windows.yml
@@ -13,11 +13,7 @@ on:
       - 'uno_ampl-completion.bash'
   pull_request:
     branches: [ "main" ]
-
-env:
-  # Customize the CMake build type here (Release, Debug, RelWithDebInfo, etc.)
-  BUILD_TYPE: Release
-
+    
 jobs:
   build:
     # The CMake configure and build commands are platform agnostic and should work equally well on Windows or Mac.
@@ -28,6 +24,8 @@ jobs:
       matrix:
         os: [windows-latest]
         architecture: [x64, x86]
+        # Customize the CMake build type here (Release, Debug, RelWithDebInfo, etc.)
+        BUILD_TYPE: [Release, Debug]
 
     steps:
     - name: Checkout repository
@@ -42,8 +40,8 @@ jobs:
     - name: Configure CMake
       # Configure CMake in a 'build' subdirectory. `CMAKE_BUILD_TYPE` is only required if you are using a single-configuration generator such as make.
       # See https://cmake.org/cmake/help/latest/variable/CMAKE_BUILD_TYPE.html?highlight=cmake_build_type
-      run: cmake -G "MinGW Makefiles" -B ${{github.workspace}}/build -DCMAKE_BUILD_TYPE=${{env.BUILD_TYPE}} -DCMAKE_Fortran_COMPILER=${{env.FC}}
+      run: cmake -G "MinGW Makefiles" -B ${{github.workspace}}/build -DCMAKE_BUILD_TYPE=${{matrix.BUILD_TYPE}} -DCMAKE_Fortran_COMPILER=${{env.FC}}
 
     - name: Build
       # Build your program with the given configuration
-      run: cmake --build ${{github.workspace}}/build --config ${{env.BUILD_TYPE}}
+      run: cmake --build ${{github.workspace}}/build --config ${{matrix.BUILD_TYPE}}