diff --git a/.gitea/workflows/ci.yml b/.gitea/workflows/ci.yml
index 3638ffb..4822841 100644
--- a/.gitea/workflows/ci.yml
+++ b/.gitea/workflows/ci.yml
@@ -35,11 +35,21 @@ jobs:
         export PATH=$HOME/.local/bin:$PATH
         python3 -c "import platform, sys; print('[ENV_DEBUG] Platform:', platform.platform(), 'Python:', sys.version)"
         
-        # distutils 누락 stub 파일 생성
+        # distutils 누락 stub 파일 생성 및 Mock 클래스 주입
         DISTUTILS_PATH=$(python3 -c "import distutils, os; print(os.path.dirname(distutils.__file__))")
         echo "[ENV_DEBUG] distutils directory: $DISTUTILS_PATH"
-        touch "$DISTUTILS_PATH/cygwinccompiler.py"
-        touch "$DISTUTILS_PATH/msvccompiler.py"
+        
+        cat << 'EOF' > "$DISTUTILS_PATH/cygwinccompiler.py"
+import distutils.ccompiler
+class CygwinCCompiler(distutils.ccompiler.CCompiler):
+    pass
+EOF
+
+        cat << 'EOF' > "$DISTUTILS_PATH/msvccompiler.py"
+import distutils.ccompiler
+class MSVCCompiler(distutils.ccompiler.CCompiler):
+    pass
+EOF
         
         # 임포트 성공 확인
         python3 -c "import distutils, distutils.cygwinccompiler, distutils.msvccompiler; print('[ENV_DEBUG] distutils stub path:', distutils.__file__)"