diff --git a/requirements.txt b/requirements.txt
index 9d7243e..53bba97 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -20,7 +20,7 @@ preshed==2.0.1
 pymongo==3.9.0
 python-dateutil==2.7.5
 pytz==2019.3
-PyYAML==3.13
+PyYAML==5.4
 requests==2.22.0
 six==1.13.0
 spacy==2.1.9