diff --git a/conda-recipe-cf/meta.yaml b/conda-recipe-cf/meta.yaml
index f661db4..3d9f19a 100644
--- a/conda-recipe-cf/meta.yaml
+++ b/conda-recipe-cf/meta.yaml
@@ -1,4 +1,4 @@
-{% set version = "0.3.0" %}
+{% set version = "0.4.0dev0" %}
 {% set buildnumber = 0 %}
 
 package:
diff --git a/mkl_umath/_version.py b/mkl_umath/_version.py
index 0404d81..5a7b2c3 100644
--- a/mkl_umath/_version.py
+++ b/mkl_umath/_version.py
@@ -1 +1 @@
-__version__ = '0.3.0'
+__version__ = '0.4.0dev0'