diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 75198b6..255c5f4 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -17,7 +17,10 @@ jobs:
         run: make format-check
 
   test:
-    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        os: [ubuntu-latest, windows-latest, macos-latest]
+    runs-on: ${{ matrix.os }}
 
     steps:
       - uses: actions/checkout@v4
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9d0c241..ce4f254 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -24,11 +24,13 @@ foreach(test ${tests})
     gtest_discover_tests(${name})
 endforeach()
 
-add_custom_target(
-    copy-compile-commands ALL
-    ${CMAKE_COMMAND}
-    -E
-    copy_if_different
-    ${CMAKE_BINARY_DIR}/compile_commands.json
-    ${CMAKE_CURRENT_LIST_DIR}
-)
+if(UNIX)
+    add_custom_target(
+        copy-compile-commands ALL
+        ${CMAKE_COMMAND}
+        -E
+        copy_if_different
+        ${CMAKE_BINARY_DIR}/compile_commands.json
+        ${CMAKE_CURRENT_LIST_DIR}
+    )
+endif()