diff --git a/CHANGES.rst b/CHANGES.rst
index dab9285f3..08efbbf24 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -1,13 +1,22 @@
+Changes in synapse 0.4.1 (2014-10-17)
+=====================================
+Webclient:
+ * Fix bug with display of timestamps.
+
 Changes in synpase 0.4.0 (2014-10-17)
 =====================================
-This server includes changes to the federation protocol that is not backwards
-compatible.
+This release includes changes to the federation protocol and client-server API
+that is not backwards compatible.
 
-The Matrix specification has been moved to a seperate git repository.
+The Matrix specification has been moved to a separate git repository:
+http://github.com/matrix-org/matrix-doc
+
+You will also need an updated syutil and config. See UPGRADES.rst.
 
 Homeserver:
- * Sign federation transactions.
- * Rename timestamp keys in PDUs.
+ * Sign federation transactions to assert strong identity over federation.
+ * Rename timestamp keys in PDUs and events from 'ts' and 'hsob_ts' to 'origin_server_ts'.
+
 
 Changes in synapse 0.3.4 (2014-09-25)
 =====================================
diff --git a/UPGRADE.rst b/UPGRADE.rst
index 713fb9ae8..99ce1a2d3 100644
--- a/UPGRADE.rst
+++ b/UPGRADE.rst
@@ -1,3 +1,16 @@
+Upgrading to v0.4.0
+===================
+
+This release needs an updated syutil version. Run::
+
+    python setup.py develop
+
+You will also need to upgrade your configuration as the signing key format has
+changed. Run::
+
+    python -m synapse.app.homeserver --config-path <CONFIG> --generate-config
+
+
 Upgrading to v0.3.0
 ===================
 
diff --git a/VERSION b/VERSION
index 1d0ba9ea1..267577d47 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-0.4.0
+0.4.1
diff --git a/setup.py b/setup.py
index 7a7e53af3..649ac8659 100755
--- a/setup.py
+++ b/setup.py
@@ -41,11 +41,12 @@ setup(
         "py-bcrypt",
     ],
     dependency_links=[
-        "git+ssh://git@github.com/matrix-org/syutil.git#egg=syutil-0.0.2",
+        "https://github.com/matrix-org/syutil/tarball/v0.0.2#egg=syutil-0.0.2",
     ],
     setup_requires=[
         "setuptools_trial",
-        "setuptools>=1.0.0", # Needs setuptools that supports git+ssh. It's not obvious when support for this was introduced.
+        "setuptools>=1.0.0", # Needs setuptools that supports git+ssh.
+                             # TODO: Do we need this now? we don't use git+ssh.
         "mock"
     ],
     include_package_data=True,
diff --git a/synapse/__init__.py b/synapse/__init__.py
index 979eac08a..7067188c5 100644
--- a/synapse/__init__.py
+++ b/synapse/__init__.py
@@ -16,4 +16,4 @@
 """ This is a reference implementation of a synapse home server.
 """
 
-__version__ = "0.4.0"
+__version__ = "0.4.1"
diff --git a/synapse/config/server.py b/synapse/config/server.py
index d9d8d0e14..9332e4acd 100644
--- a/synapse/config/server.py
+++ b/synapse/config/server.py
@@ -94,7 +94,7 @@ class ServerConfig(Config):
             with open(args.signing_key_path, "w") as signing_key_file:
                 syutil.crypto.signing_key.write_signing_keys(
                     signing_key_file,
-                    (syutil.crypto.SigningKey.generate("auto"),),
+                    (syutil.crypto.signing_key.generate_singing_key("auto"),),
                 )
         else:
             signing_keys = cls.read_file(args.signing_key_path, "signing_key")
diff --git a/synapse/handlers/register.py b/synapse/handlers/register.py
index df562aa76..94b7890b5 100644
--- a/synapse/handlers/register.py
+++ b/synapse/handlers/register.py
@@ -15,6 +15,7 @@
 
 """Contains functions for registering clients."""
 from twisted.internet import defer
+from twisted.python import log
 
 from synapse.types import UserID
 from synapse.api.errors import (
@@ -126,7 +127,7 @@ class RegistrationHandler(BaseHandler):
             try:
                 threepid = yield self._threepid_from_creds(c)
             except:
-                logger.err()
+                log.err()
                 raise RegistrationError(400, "Couldn't validate 3pid")
 
             if not threepid:
diff --git a/synapse/http/client.py b/synapse/http/client.py
index 316ca1ccb..46c90dbb7 100644
--- a/synapse/http/client.py
+++ b/synapse/http/client.py
@@ -101,7 +101,9 @@ class BaseHttpClient(object):
 
         while True:
 
-            producer = body_callback(method, url_bytes, headers_dict)
+            producer = None
+            if body_callback:
+                producer = body_callback(method, url_bytes, headers_dict)
 
             try:
                 response = yield self.agent.request(
@@ -312,6 +314,42 @@ class IdentityServerHttpClient(BaseHttpClient):
 
         defer.returnValue(json.loads(body))
 
+    @defer.inlineCallbacks
+    def get_json(self, destination, path, args={}, retry_on_dns_fail=True):
+        """ Get's some json from the given host homeserver and path
+
+        Args:
+            destination (str): The remote server to send the HTTP request
+                to.
+            path (str): The HTTP path.
+            args (dict): A dictionary used to create query strings, defaults to
+                None.
+                **Note**: The value of each key is assumed to be an iterable
+                and *not* a string.
+
+        Returns:
+            Deferred: Succeeds when we get *any* HTTP response.
+
+            The result of the deferred is a tuple of `(code, response)`,
+            where `response` is a dict representing the decoded JSON body.
+        """
+        logger.debug("get_json args: %s", args)
+
+        query_bytes = urllib.urlencode(args, True)
+        logger.debug("Query bytes: %s Retry DNS: %s", args, retry_on_dns_fail)
+
+        response = yield self._create_request(
+            destination.encode("ascii"),
+            "GET",
+            path.encode("ascii"),
+            query_bytes=query_bytes,
+            retry_on_dns_fail=retry_on_dns_fail,
+            body_callback=None
+        )
+
+        body = yield readBody(response)
+
+        defer.returnValue(json.loads(body))
 
 class CaptchaServerHttpClient(MatrixHttpClient):
     """Separate HTTP client for talking to google's captcha servers"""