diff --git a/style.css b/style.css
index a25f8a0..e10a4ee 100644
--- a/style.css
+++ b/style.css
@@ -2,7 +2,7 @@
 Theme Name:         Aldine
 Theme URI:          https://github.com/pressbooks/pressbooks-aldine/
 Description:        Aldine is the default theme for the home page of Pressbooks networks. It is named for the Aldine Press, founded by Aldus Manutius in 1494, who is regarded by many as the world’s first publisher.
-Version:            1.6.4
+Version:            1.6.5-dev
 Author:             Pressbooks (Book Oven Inc.)
 Author URI:         https://pressbooks.org
 Text Domain:        pressbooks-aldine