diff --git a/proxy_mediator/__main__.py b/proxy_mediator/__main__.py
index 2d3a48d..4495f9c 100644
--- a/proxy_mediator/__main__.py
+++ b/proxy_mediator/__main__.py
@@ -1,4 +1,5 @@
 """Connections Protocol Starter Kit."""
+
 import asyncio
 from contextlib import asynccontextmanager, suppress
 import logging
diff --git a/proxy_mediator/agent.py b/proxy_mediator/agent.py
index f72dd9a..80b0812 100644
--- a/proxy_mediator/agent.py
+++ b/proxy_mediator/agent.py
@@ -1,4 +1,5 @@
 """Proxy Mediator Agent."""
+
 import asyncio
 from contextvars import ContextVar
 import logging
diff --git a/proxy_mediator/connection.py b/proxy_mediator/connection.py
index 36da42c..6a72d59 100644
--- a/proxy_mediator/connection.py
+++ b/proxy_mediator/connection.py
@@ -1,4 +1,5 @@
 """Connection object."""
+
 import asyncio
 from asyncio.futures import Future
 import json
diff --git a/proxy_mediator/error.py b/proxy_mediator/error.py
index edcc40d..4ed5912 100644
--- a/proxy_mediator/error.py
+++ b/proxy_mediator/error.py
@@ -1,6 +1,5 @@
 """Errors and error related utilities."""
 
-
 from abc import ABC
 import functools
 import logging
diff --git a/proxy_mediator/protocols/basicmessage.py b/proxy_mediator/protocols/basicmessage.py
index 04c7270..18c67f9 100644
--- a/proxy_mediator/protocols/basicmessage.py
+++ b/proxy_mediator/protocols/basicmessage.py
@@ -1,4 +1,5 @@
 """Basic Message Module."""
+
 from aries_staticagent.module import Module, ModuleRouter
 from aries_staticagent.utils import timestamp
 
diff --git a/proxy_mediator/protocols/connections.py b/proxy_mediator/protocols/connections.py
index e10c34c..6ae8452 100644
--- a/proxy_mediator/protocols/connections.py
+++ b/proxy_mediator/protocols/connections.py
@@ -119,9 +119,9 @@ def doc_for_connection(
                     "type": "IndyAgent",
                     "recipientKeys": [connection.verkey_b58],
                     "routingKeys": [],
-                    "serviceEndpoint": endpoint
-                    if endpoint is not None
-                    else self.endpoint,
+                    "serviceEndpoint": (
+                        endpoint if endpoint is not None else self.endpoint
+                    ),
                 }
             ],
         }
diff --git a/proxy_mediator/protocols/coordinate_mediation.py b/proxy_mediator/protocols/coordinate_mediation.py
index 45acfe4..24cdb1c 100644
--- a/proxy_mediator/protocols/coordinate_mediation.py
+++ b/proxy_mediator/protocols/coordinate_mediation.py
@@ -1,4 +1,5 @@
 """Coordinate mediation protocol."""
+
 import asyncio
 from contextvars import ContextVar
 import logging
@@ -156,9 +157,11 @@ async def mediate_request(self, msg, conn):
                 "routing_keys": [
                     verkey_to_didkey(agent.mediator_connection.verkey),
                     *[
-                        verkey_b58_to_didkey(key)
-                        if not key.startswith("did:key:")
-                        else key
+                        (
+                            verkey_b58_to_didkey(key)
+                            if not key.startswith("did:key:")
+                            else key
+                        )
                         for key in self.external_mediator_routing_keys
                     ],
                 ],
diff --git a/proxy_mediator/protocols/oob_didexchange.py b/proxy_mediator/protocols/oob_didexchange.py
index fabde85..5640edb 100644
--- a/proxy_mediator/protocols/oob_didexchange.py
+++ b/proxy_mediator/protocols/oob_didexchange.py
@@ -257,9 +257,11 @@ async def response(self, msg: Message, conn: Connection):
                 "@type": self.type("complete"),
                 "~thread": {
                     "thid": msg.thread["thid"],
-                    "pthid": msg.thread["pthid"]
-                    if "pthid" in msg.thread
-                    else msg.thread["thid"],
+                    "pthid": (
+                        msg.thread["pthid"]
+                        if "pthid" in msg.thread
+                        else msg.thread["thid"]
+                    ),
                 },
             }
         )
diff --git a/proxy_mediator/protocols/routing.py b/proxy_mediator/protocols/routing.py
index c033fa4..44a75e6 100644
--- a/proxy_mediator/protocols/routing.py
+++ b/proxy_mediator/protocols/routing.py
@@ -1,4 +1,5 @@
 """Routing protocol."""
+
 import json
 import logging
 from typing import Any, Dict
diff --git a/proxy_mediator/store.py b/proxy_mediator/store.py
index 31fefd5..804c8a3 100644
--- a/proxy_mediator/store.py
+++ b/proxy_mediator/store.py
@@ -1,4 +1,5 @@
 """Helper for working with Askar store."""
+
 from contextlib import asynccontextmanager
 from contextvars import ContextVar
 import logging