diff --git a/synapse/storage/__init__.py b/synapse/storage/__init__.py
index c8e0efb18..3aa6345a7 100644
--- a/synapse/storage/__init__.py
+++ b/synapse/storage/__init__.py
@@ -64,7 +64,7 @@ SCHEMAS = [
 
 # Remember to update this number every time an incompatible change is made to
 # database schema files, so the users will be informed on server restarts.
-SCHEMA_VERSION = 5
+SCHEMA_VERSION = 6
 
 
 class _RollbackButIsFineException(Exception):
diff --git a/synapse/storage/schema/delta/v6.sql b/synapse/storage/schema/delta/v6.sql
new file mode 100644
index 000000000..9bf2068d8
--- /dev/null
+++ b/synapse/storage/schema/delta/v6.sql
@@ -0,0 +1,31 @@
+/* Copyright 2014 OpenMarket Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+CREATE TABLE IF NOT EXISTS server_tls_certificates(
+  server_name TEXT, -- Server name.
+  fingerprint TEXT, -- Certificate fingerprint.
+  from_server TEXT, -- Which key server the certificate was fetched from.
+  ts_added_ms INTEGER, -- When the certifcate was added.
+  tls_certificate BLOB, -- DER encoded x509 certificate.
+  CONSTRAINT uniqueness UNIQUE (server_name, fingerprint)
+);
+
+CREATE TABLE IF NOT EXISTS server_signature_keys(
+  server_name TEXT, -- Server name.
+  key_id TEXT, -- Key version.
+  from_server TEXT, -- Which key server the key was fetched form.
+  ts_added_ms INTEGER, -- When the key was added.
+  verify_key BLOB, -- NACL verification key.
+  CONSTRAINT uniqueness UNIQUE (server_name, key_id)
+);