diff --git a/setup.py b/setup.py
index 72980bb0..60719ff1 100755
--- a/setup.py
+++ b/setup.py
@@ -97,7 +97,7 @@ class PyTest(TestCommand):
 
 setup(
     name='raven',
-    version='5.10.2',
+    version='5.10.3.dev.0',
     author='Sentry',
     author_email='hello@getsentry.com',
     url='https://github.com/getsentry/raven-python',