diff --git a/requirements.txt b/requirements.txt
index dc82b370..ef117770 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 attrs==20.3.0
 bcrypt==3.2.0
-boto3==1.17.49
-botocore==1.20.49
+boto3==1.17.57
+botocore==1.20.57
 canonicaljson-rs==0.3.0
 certifi==2020.12.5
 cffi==1.14.5
@@ -35,7 +35,7 @@ python-dateutil==2.8.1
 repoze.sendmail==4.4.1
 requests==2.25.1
 requests-hawk==1.1.0
-s3transfer==0.3.6
+s3transfer==0.4.2
 six==1.15.0
 transaction==3.0.1
 translationstring==1.4
diff --git a/tests/test_events.py b/tests/test_events.py
index 6780cb78..6cbe0a24 100644
--- a/tests/test_events.py
+++ b/tests/test_events.py
@@ -163,12 +163,11 @@ def test_resource_changed_is_triggered_for_resign(self):
         self._sign()
         before = len(listener.received)
 
-        self.app.patch_json(self.source_collection,
-                            {"data": {"status": "to-resign"}},
-                            headers=self.headers)
+        self.app.patch_json(
+            self.source_collection, {"data": {"status": "to-resign"}}, headers=self.headers
+        )
 
-        events = [e for e in listener.received[before:]
-                  if e.payload["collection_id"] == "scid"]
+        events = [e for e in listener.received[before:] if e.payload["collection_id"] == "scid"]
         assert len(events) == 2
         event_tosign = events[0]
         assert len(event_tosign.impacted_records) == 1