diff --git a/README.rst b/README.rst
index 7b4bbc3..47c762b 100644
--- a/README.rst
+++ b/README.rst
@@ -29,7 +29,7 @@ Features
 --------
 * easily plug event handling scripts for all Orthanc's `change events`_ -
 * chain functions into a pipeline (composition)
-* run asyncio functions (coroutines) for concurrent processing of a change event
+* run asyncio functions (coroutines) for concurrent processing of change events
 * run (integration) tests for your Orthanc python scripts
 * publish events to Kafka, RabbitMQ and NATS
 
@@ -54,7 +54,7 @@ Httpx was chosen as a base library to access the Orthanc API, rather than orthan
 developer friendly, and external API access avoids deadlocks in the Python plugin (before this was solved in 3.1).
 
 
-Running
+Getting Started
 -------
 
 ``entry_point.py`` provides the first boilerplate to get started. Run it by issuing
diff --git a/docs/usage.rst b/docs/usage.rst
index bc58272..b7956d0 100644
--- a/docs/usage.rst
+++ b/docs/usage.rst
@@ -14,7 +14,7 @@ specified in orthanc.json or as an environment variable for the Osimis docker im
        logging.warn(evt.resource_id)
 
     event_dispatcher.register_event_handlers({orthanc.ChangeType.STABLE_STUDY: log_event}, orthanc_module=orthanc,
-                                             session=event_dispatcher.create_session(orthanc))
+                                             sync_client=event_dispatcher.create_session(orthanc))
 
 To unit test the log_event handler with pytest, use::
 
@@ -26,7 +26,7 @@ To unit test the log_event handler with pytest, use::
 
         assert 'resource-uuid' in caplog.text
 
-One can use the excellent responses_ library to stub the API responses.
+One can use the excellent respx_ library to stub the API responses.
 
 To integration test a handler, use::
 
@@ -53,4 +53,4 @@ To integration test a handler, use::
 The event_dispatcher will ensure that your API call will work the same when called from the Orthanc Python plugin.
 For more examples, see the tests/ directory in the Git repository.
 
-.. _responses: https://github.com/getsentry/responses
+.. respx: https://lundberg.github.io/respx/
diff --git a/tests/test_event_dispatcher.py b/tests/test_event_dispatcher.py
index 585001b..6b5c4ab 100644
--- a/tests/test_event_dispatcher.py
+++ b/tests/test_event_dispatcher.py
@@ -5,8 +5,8 @@
 from functools import partial
 
 import httpx
-import respx
 import pytest
+import respx
 
 from orthanc_ext import event_dispatcher
 from orthanc_ext.http_utilities import create_internal_client, ClientType