diff --git a/CHANGES.md b/CHANGES.md
index b44248e26414..aade896bd5ec 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,3 +1,12 @@
+Synapse 1.19.3 (2020-09-18)
+===========================
+
+Bugfixes
+--------
+
+- Partially mitigate bug where newly joined servers couldn't get past events in a room when there is a malformed event. ([\#8350](https://github.com/matrix-org/synapse/issues/8350))
+
+
 Synapse 1.20.0rc4 (2020-09-16)
 ==============================
 
diff --git a/debian/changelog b/debian/changelog
index bb7c175ada98..dbf01d6b1e24 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -4,6 +4,12 @@ matrix-synapse-py3 (1.20.0ubuntu1) UNRELEASED; urgency=medium
 
  -- Dexter Chua <dec41@srcf.net>  Wed, 26 Aug 2020 12:41:36 +0000
 
+matrix-synapse-py3 (1.19.3) stable; urgency=medium
+
+  * New synapse release 1.19.3.
+
+ -- Synapse Packaging team <packages@matrix.org>  Fri, 18 Sep 2020 14:59:30 +0100
+
 matrix-synapse-py3 (1.19.2) stable; urgency=medium
 
   * New synapse release 1.19.2.
diff --git a/synapse/federation/federation_client.py b/synapse/federation/federation_client.py
index a2e8d96ea27c..d42930d1b94b 100644
--- a/synapse/federation/federation_client.py
+++ b/synapse/federation/federation_client.py
@@ -217,11 +217,9 @@ async def backfill(
             for p in transaction_data["pdus"]
         ]
 
-        # FIXME: We should handle signature failures more gracefully.
-        pdus[:] = await make_deferred_yieldable(
-            defer.gatherResults(
-                self._check_sigs_and_hashes(room_version, pdus), consumeErrors=True,
-            ).addErrback(unwrapFirstError)
+        # Check signatures and hash of pdus, removing any from the list that fail checks
+        pdus[:] = await self._check_sigs_and_hash_and_fetch(
+            dest, pdus, outlier=True, room_version=room_version
         )
 
         return pdus