diff --git a/CHANGES.rst b/CHANGES.rst
index 476d6fb6b..82247fa52 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -1,3 +1,9 @@
+Changes in synapse v0.21.0 (2017-05-18)
+=======================================
+
+No changes since v0.21.0-rc3
+
+
 Changes in synapse v0.21.0-rc3 (2017-05-17)
 ===========================================
 
diff --git a/synapse/__init__.py b/synapse/__init__.py
index c39dde913..2a40bab3f 100644
--- a/synapse/__init__.py
+++ b/synapse/__init__.py
@@ -16,4 +16,4 @@
 """ This is a reference implementation of a Matrix home server.
 """
 
-__version__ = "0.21.0-rc3"
+__version__ = "0.21.0"