diff --git a/src/version.py b/src/version.py
index 2385e83..99ed0c9 100644
--- a/src/version.py
+++ b/src/version.py
@@ -1 +1 @@
-__version__ = '0.3.0-dev'
+__version__ = '0.4.0-dev'
\ No newline at end of file