diff --git a/requirements.txt b/requirements.txt
index cdafcce47..38de8e926 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -36,16 +36,16 @@ git+https://github.com/alphagov/notifications-utils.git@30.7.4#egg=notifications
 git+https://github.com/alphagov/boto.git@2.43.0-patch3#egg=boto==2.43.0-patch3
 
 ## The following requirements were added by pip freeze:
-alembic==1.0.6
+alembic==1.0.7
 amqp==1.4.9
 anyjson==0.3.3
 attrs==18.2.0
-awscli==1.16.95
+awscli==1.16.96
 bcrypt==3.1.6
 billiard==3.3.0.23
 bleach==3.0.2
 boto3==1.6.16
-botocore==1.12.85
+botocore==1.12.86
 certifi==2018.11.29
 chardet==3.0.4
 Click==7.0
@@ -73,7 +73,7 @@ python-editor==1.0.3
 python-json-logger==0.1.10
 pytz==2018.9
 PyYAML==3.12
-redis==3.0.1
+redis==3.1.0
 requests==2.21.0
 rsa==3.4.2
 s3transfer==0.1.13
diff --git a/requirements_for_test.txt b/requirements_for_test.txt
index 13951402f..7714e63d8 100644
--- a/requirements_for_test.txt
+++ b/requirements_for_test.txt
@@ -1,5 +1,5 @@
 -r requirements.txt
-flake8==3.6.0
+flake8==3.7.3
 pytest==3.10.1
 moto==1.3.7
 pytest-env==0.6.2
diff --git a/tests/app/accept_invite/test_accept_invite_rest.py b/tests/app/accept_invite/test_accept_invite_rest.py
index ccdd8e42c..72e72cea8 100644
--- a/tests/app/accept_invite/test_accept_invite_rest.py
+++ b/tests/app/accept_invite/test_accept_invite_rest.py
@@ -9,19 +9,19 @@ from tests import create_authorization_header
 
 @pytest.mark.parametrize('invitation_type', ['service', 'organisation'])
 def test_validate_invitation_token_for_expired_token_returns_400(client, invitation_type):
-        with freeze_time('2016-01-01T12:00:00'):
-            token = generate_token(str(uuid.uuid4()), current_app.config['SECRET_KEY'],
-                                   current_app.config['DANGEROUS_SALT'])
-        url = '/invite/{}/{}'.format(invitation_type, token)
-        auth_header = create_authorization_header()
-        response = client.get(url, headers=[('Content-Type', 'application/json'), auth_header])
+    with freeze_time('2016-01-01T12:00:00'):
+        token = generate_token(str(uuid.uuid4()), current_app.config['SECRET_KEY'],
+                               current_app.config['DANGEROUS_SALT'])
+    url = '/invite/{}/{}'.format(invitation_type, token)
+    auth_header = create_authorization_header()
+    response = client.get(url, headers=[('Content-Type', 'application/json'), auth_header])
 
-        assert response.status_code == 400
-        json_resp = json.loads(response.get_data(as_text=True))
-        assert json_resp['result'] == 'error'
-        assert json_resp['message'] == {'invitation': [
-            'Your invitation to GOV.UK Notify has expired. '
-            'Please ask the person that invited you to send you another one']}
+    assert response.status_code == 400
+    json_resp = json.loads(response.get_data(as_text=True))
+    assert json_resp['result'] == 'error'
+    assert json_resp['message'] == {'invitation': [
+        'Your invitation to GOV.UK Notify has expired. '
+        'Please ask the person that invited you to send you another one']}
 
 
 @pytest.mark.parametrize('invitation_type', ['service', 'organisation'])
diff --git a/tests/app/test_encryption.py b/tests/app/test_encryption.py
index d3566b202..a985e04ea 100644
--- a/tests/app/test_encryption.py
+++ b/tests/app/test_encryption.py
@@ -4,17 +4,17 @@ encryption = Encryption()
 
 
 def test_should_encrypt_content(notify_api):
-        encryption.init_app(notify_api)
-        assert encryption.encrypt("this") != "this"
+    encryption.init_app(notify_api)
+    assert encryption.encrypt("this") != "this"
 
 
 def test_should_decrypt_content(notify_api):
-        encryption.init_app(notify_api)
-        encrypted = encryption.encrypt("this")
-        assert encryption.decrypt(encrypted) == "this"
+    encryption.init_app(notify_api)
+    encrypted = encryption.encrypt("this")
+    assert encryption.decrypt(encrypted) == "this"
 
 
 def test_should_encrypt_json(notify_api):
-        encryption.init_app(notify_api)
-        encrypted = encryption.encrypt({"this": "that"})
-        assert encryption.decrypt(encrypted) == {"this": "that"}
+    encryption.init_app(notify_api)
+    encrypted = encryption.encrypt({"this": "that"})
+    assert encryption.decrypt(encrypted) == {"this": "that"}