Sign release tags

1 files changed, 1 insertions, 1 deletions

diff --git a/bumper b/bumper
index fe37f14..41f50a4 100755
--- a/bumper
+++ b/bumper
@@ -37,7 +37,7 @@ class Bumper(cliapp.Application):
         name = self.get_project_name()
         tag_name = '{}-{}'.format(name, version)
         msg = 'Release version {}'.format(version)
-        cliapp.runcmd(['git', 'tag', '-am', msg, tag_name])
+        cliapp.runcmd(['git', 'tag', '-sam', msg, tag_name])
 
     def get_project_name(self):
         output = cliapp.runcmd(['python', 'setup.py', '--name'])