diff --git a/requirements.txt b/requirements.txt
index 509e0b2..122b207 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -37,7 +37,7 @@ Pygments==2.2.0
 pyparsing==2.2.0
 python-dateutil==2.7.2
 pytz==2018.4
-PyYAML==3.12
+PyYAML==5.4
 pyzmq==17.0.0
 requests==2.19.1
 scikit-learn==0.19.1