diff --git a/docs/source/conf.py b/docs/source/conf.py
index 6b275414..b047f35e 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -53,9 +53,9 @@
 # built documents.
 #
 # The short X.Y version.
-version = u'0.12.4'
+version = u'0.12.5.dev0'
 # The full version, including alpha/beta/rc tags.
-release = u'0.12.4'
+release = u'0.12.5.dev0'
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
diff --git a/wikibaseintegrator/__init__.py b/wikibaseintegrator/__init__.py
index 47712a5f..0705b0d8 100644
--- a/wikibaseintegrator/__init__.py
+++ b/wikibaseintegrator/__init__.py
@@ -18,4 +18,4 @@
 
 from .wikibaseintegrator import WikibaseIntegrator
 
-__version__ = '0.12.4'
+__version__ = '0.12.5.dev0'