diff --git a/setup.py b/setup.py
index e590ac3..4acf43b 100644
--- a/setup.py
+++ b/setup.py
@@ -16,7 +16,7 @@
 
 setup(
     name='mozci',
-    version='0.43.0',
+    version='0.43.1.dev0',
     packages=find_packages(),
     install_requires=required + ['pytest-runner'],
     tests_require=required + ['mock', 'pytest'],