diff --git a/dist/openclaw/scripts/build_openclaw.py b/dist/openclaw/scripts/build_openclaw.py
index d13a38d..321a9d9 100644
--- a/dist/openclaw/scripts/build_openclaw.py
+++ b/dist/openclaw/scripts/build_openclaw.py
@@ -104,7 +104,9 @@ def build(output_dir: Path):
         if src.is_dir():
             if dst.exists():
                 shutil.rmtree(dst)
-            shutil.copytree(src, dst)
+            shutil.copytree(src, dst, ignore=shutil.ignore_patterns(
+                "__pycache__", "*.pyc", "*.pyo",
+            ))
             print(f"  {d}/ → {dst}")
 
     # Copy supporting files
diff --git a/scripts/build_openclaw.py b/scripts/build_openclaw.py
index d13a38d..321a9d9 100644
--- a/scripts/build_openclaw.py
+++ b/scripts/build_openclaw.py
@@ -104,7 +104,9 @@ def build(output_dir: Path):
         if src.is_dir():
             if dst.exists():
                 shutil.rmtree(dst)
-            shutil.copytree(src, dst)
+            shutil.copytree(src, dst, ignore=shutil.ignore_patterns(
+                "__pycache__", "*.pyc", "*.pyo",
+            ))
             print(f"  {d}/ → {dst}")
 
     # Copy supporting files