diff --git a/pythonclaw/main.py b/pythonclaw/main.py
index d43691c..7c46437 100644
--- a/pythonclaw/main.py
+++ b/pythonclaw/main.py
@@ -15,7 +15,7 @@
 import asyncio
 import logging
 
-from . import config
+from . import config, __version__
 from .core.persistent_agent import PersistentAgent
 from .core.session_store import SessionStore
 
@@ -412,6 +412,9 @@ def _build_parser() -> argparse.ArgumentParser:
         default=None,
         help="Path to pythonclaw.json config file.",
     )
+    parser.add_argument(
+        "--version", "-V", action="version", version=f"pythonclaw {__version__}"
+    )
     # Hidden --mode for backward compat
     parser.add_argument("--mode", default=None, help=argparse.SUPPRESS)
     parser.add_argument("--channels", nargs="+", default=None, help=argparse.SUPPRESS)