diff --git a/claude/uclaude_updater.py b/claude/uclaude_updater.py
index f6c81b1..087dd7b 100644
--- a/claude/uclaude_updater.py
+++ b/claude/uclaude_updater.py
@@ -412,6 +412,9 @@ def install_cli_js(version, cli_js_path):
         shutil.copy2(cli_js_path, backup_path)
         shutil.copy2(release_cli, cli_js_path)
 
+        # Ensure execute permission (755)
+        os.chmod(cli_js_path, 0o755)
+
         # Syntax check
         result = subprocess.run(
             ["node", "--check", cli_js_path],