diff --git a/requirements.txt b/requirements.txt
index 6c2d839b5..79da8b7ad 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -22,7 +22,7 @@ iso8601==0.1.12
 celery==3.1.25 # pyup: <4
 
 # pin to minor version 3.1.x
-notifications-python-client>=3.1,<3.2
+notifications-python-client==4.3.1
 
 # PaaS
 awscli>=1.11,<1.12