diff --git a/.bumpversion.cfg b/.bumpversion.cfg
index efc36ae6..3c5874eb 100644
--- a/.bumpversion.cfg
+++ b/.bumpversion.cfg
@@ -1,5 +1,5 @@
 [bumpversion]
-current_version = 3.12.0
+current_version = 3.12.1.dev0
 commit = True
 tag = True
 sign_tags = True
diff --git a/idr_gallery/version.py b/idr_gallery/version.py
index 9c3b4cbf..9e3bb2a5 100644
--- a/idr_gallery/version.py
+++ b/idr_gallery/version.py
@@ -1,4 +1,4 @@
 
 # This can be loaded via the app.
 # It will be updated by bumpversion
-VERSION = '3.12.0'
+VERSION = '3.12.1.dev0'