diff --git a/googledevices/cli/cli.py b/googledevices/cli/cli.py
index 71c3ad7..f4252fb 100644
--- a/googledevices/cli/cli.py
+++ b/googledevices/cli/cli.py
@@ -91,7 +91,7 @@ def debug(host, test, timeout=30):
 @commands.command('alarm-volume')
 @click.argument('host', required=1)
 @click.option('--mode', '-M', type=str, required=1, help="'get' or 'set'")
-@click.option('--volume', '-V', type=int)
+@click.option('--volume', '-V', type=float)
 def alarm_volume(host, mode, volume=None):
     """Get or set alarm volume."""
     import googledevices.cli.commands.alarm_volume as command