diff --git a/requirements-app.txt b/requirements-app.txt
index fd05e0a1a..d54f17b21 100644
--- a/requirements-app.txt
+++ b/requirements-app.txt
@@ -12,7 +12,7 @@ pyexcel-io==0.5.11
 pyexcel-xls==0.5.8
 pyexcel-xlsx==0.5.6
 pyexcel-ods3==0.5.3
-pytz==2018.7
+pytz==2018.9
 gunicorn==19.7.1  # >19.8 stops eventlet workers after a timeout
 eventlet==0.24.1
 notifications-python-client==5.2.0
diff --git a/requirements.txt b/requirements.txt
index bd98d2ab6..7a848fbfc 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -14,7 +14,7 @@ pyexcel-io==0.5.11
 pyexcel-xls==0.5.8
 pyexcel-xlsx==0.5.6
 pyexcel-ods3==0.5.3
-pytz==2018.7
+pytz==2018.9
 gunicorn==19.7.1  # >19.8 stops eventlet workers after a timeout
 eventlet==0.24.1
 notifications-python-client==5.2.0
@@ -28,10 +28,10 @@ itsdangerous==0.24  # pyup: <1.0.0
 git+https://github.com/alphagov/notifications-utils.git@30.7.4#egg=notifications-utils==30.7.4
 
 ## The following requirements were added by pip freeze:
-awscli==1.16.85
+awscli==1.16.86
 bleach==3.0.2
 boto3==1.6.16
-botocore==1.12.75
+botocore==1.12.76
 certifi==2018.11.29
 chardet==3.0.4
 Click==7.0