diff --git a/bundles/octoprint/metadata.py b/bundles/octoprint/metadata.py
index 6d0028a..76dc772 100644
--- a/bundles/octoprint/metadata.py
+++ b/bundles/octoprint/metadata.py
@@ -7,6 +7,7 @@ defaults = {
                 '/opt/octoprint/systemd-wrapper',
             },
             'groups': {
+                'dialout',
                 'gpio',
             },
         },