diff --git a/dev-requirements.txt b/dev-requirements.txt
index fd1a6a9..7c271cd 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -90,7 +90,7 @@ python-dateutil==2.8.0
 python-jose==2.0.2
 python-levenshtein==0.12.0
 pytz==2019.1
-pyyaml==5.1
+pyyaml==5.4
 raven[flask]==6.10.0
 redis==3.2.1
 requests==2.22.0          # via aws-xray-sdk, codecov, docker, responses, sphinx