diff --git a/CHANGES.rst b/CHANGES.rst
index a2b1023e7..d15973a8c 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -1,4 +1,10 @@
-Changes in synapse v0.19.0-rc3 (2017-02-03)
+Changes in synapse v0.19.0-rc4 (2017-02-02)
+===========================================
+
+* Bump cache sizes for common membership queries (PR #1879)
+
+
+Changes in synapse v0.19.0-rc3 (2017-02-02)
 ===========================================
 
 * Fix email push in pusher worker (PR #1875)
diff --git a/synapse/__init__.py b/synapse/__init__.py
index ceabdcb48..950c4178b 100644
--- a/synapse/__init__.py
+++ b/synapse/__init__.py
@@ -16,4 +16,4 @@
 """ This is a reference implementation of a Matrix home server.
 """
 
-__version__ = "0.19.0-rc3"
+__version__ = "0.19.0-rc4"