diff --git a/synapse/__init__.py b/synapse/__init__.py
index 56c10a84e9..c89f444f4e 100644
--- a/synapse/__init__.py
+++ b/synapse/__init__.py
@@ -16,4 +16,4 @@
 """ This is a reference implementation of a Matrix home server.
 """
 
-__version__ = "0.8.1-r4"
+__version__ = "0.9.0"