diff --git a/requirements.txt b/requirements.txt
index fbe531326..d0d6c8a3d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,7 +4,7 @@
 #
 #    pip-compile --output-file requirements.txt requirements.in
 #
-boto3==1.7.39
+boto3==1.7.40
 boto==2.48.0              # via cloudaux
 botocore==1.8.39          # via boto3, cloudaux, s3transfer
 certifi==2018.1.18        # via requests