diff --git a/setup.py b/setup.py
index 27a1c84..a11938e 100644
--- a/setup.py
+++ b/setup.py
@@ -9,7 +9,7 @@
 
 setup(
     name="mw_plot",
-    version="0.12.0",
+    version="0.12.1.dev0",
     classifiers=[
         "Development Status :: 3 - Alpha",
         "License :: OSI Approved :: MIT License",