diff --git a/check_home_assistant_state.py b/check_home_assistant_state.py
index ca9d4c9..b966c80 100755
--- a/check_home_assistant_state.py
+++ b/check_home_assistant_state.py
@@ -147,6 +147,7 @@ class Icinga2ConfAction(argparse.Action):
 def main():
     argp = argparse.ArgumentParser(description=__doc__)
 
+    argp.add_argument("--version", action="version", version="0.1.0")
     argp.add_argument("-v", "--verbose", action="count", default=0)
     argp.add_argument("--make-icinga-conf", action=Icinga2ConfAction)