diff --git a/tests/notifications_utils/test_s3.py b/tests/notifications_utils/test_s3.py
index 46b863c4f..8208f6c41 100644
--- a/tests/notifications_utils/test_s3.py
+++ b/tests/notifications_utils/test_s3.py
@@ -13,7 +13,11 @@ content_type = "binary/octet-stream"
 
 
 def test_s3upload_save_file_to_bucket(mocker):
-    mocked = mocker.patch("notifications_utils.s3.Session.resource")
+
+    mock_s3_client = mocker.Mock()
+    mocked = mocker.patch(
+        "notification_utils.s3.get_s3_client", return_value=mock_s3_client
+    )
     s3upload(
         filedata=contents, region=region, bucket_name=bucket, file_location=location
     )
@@ -27,7 +31,9 @@ def test_s3upload_save_file_to_bucket(mocker):
 
 def test_s3upload_save_file_to_bucket_with_contenttype(mocker):
     content_type = "image/png"
-    mocked = mocker.patch("notifications_utils.s3.Session.resource")
+
+    mock_s3_client = mocker.Mock()
+    mocked = mocker.patch("app.aws.s3.get_s3_client", return_value=mock_s3_client)
     s3upload(
         filedata=contents,
         region=region,
@@ -44,7 +50,9 @@ def test_s3upload_save_file_to_bucket_with_contenttype(mocker):
 
 
 def test_s3upload_raises_exception(app, mocker):
-    mocked = mocker.patch("notifications_utils.s3.Session.resource")
+
+    mock_s3_client = mocker.Mock()
+    mocked = mocker.patch("app.aws.s3.get_s3_client", return_value=mock_s3_client)
     response = {"Error": {"Code": 500}}
     exception = botocore.exceptions.ClientError(response, "Bad exception")
     mocked.return_value.Object.return_value.put.side_effect = exception