diff --git a/setup.cfg b/setup.cfg
index 348a0add..d0dae659 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -2,7 +2,7 @@
 current_version = 0.9.0
 commit = True
 tag = True
-tag_name = '{new_version}'
+tag_name = {new_version}
 
 [bumpversion:file:setup.py]
 search = version='{current_version}'