diff --git a/datasette/cli.py b/datasette/cli.py
index 3c07d7df..646f90bb 100644
--- a/datasette/cli.py
+++ b/datasette/cli.py
@@ -11,6 +11,7 @@ from .utils import (
 
 
 @click.group(cls=DefaultGroup, default='serve', default_if_no_args=True)
+@click.version_option()
 def cli():
     """
     Datasette!