diff --git a/requirements.txt b/requirements.txt
index e043bc3..3e4ec8a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -17,7 +17,7 @@ iron-core==1.1.9          # via iron-mq
 iron-mq==0.8
 jmespath==0.9.0           # via boto3, botocore
 psutil==3.2.2
-pymongo==3.1
+pymongo==3.1.1
 python-dateutil==2.4.2    # via arrow, botocore, iron-core
 redis==2.10.5
 requests==2.8.1           # via iron-core