diff --git a/requirements.txt b/requirements.txt
index f2124af1e..3e87a8d90 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -9,6 +9,7 @@ Flask-WTF==0.11
 Flask-Login==0.2.11
 Flask-Bcrypt==0.6.2
 credstash==1.8.0
+boto3==1.2.3
 
 git+https://github.com/alphagov/notify-api-client.git@0.1.4#egg=notify-api-client==0.1.4