diff --git a/setup.py b/setup.py
index 6916086..847ef62 100644
--- a/setup.py
+++ b/setup.py
@@ -5,7 +5,7 @@
 
 setup(
     name="tc-admin",
-    version="3.3.3",
+    version="4.0.0",
     description="Administration of Taskcluster runtime configuration",
     long_description=long_description,
     long_description_content_type='text/markdown',