From cac4723afe9d805b5d2906665fafffaef5d3e1a9 Mon Sep 17 00:00:00 2001
From: Erik Johnston <erik@matrix.org>
Date: Fri, 8 Mar 2019 15:08:34 +0000
Subject: [PATCH] Newsfile

---
 changelog.d/4837.bugfix | 1 +
 1 file changed, 1 insertion(+)
 create mode 100644 changelog.d/4837.bugfix

diff --git a/changelog.d/4837.bugfix b/changelog.d/4837.bugfix
new file mode 100644
index 000000000..989aeb82b
--- /dev/null
+++ b/changelog.d/4837.bugfix
@@ -0,0 +1 @@
+Fix bug where synapse expected an un-specced `prev_state` field on state events.