diff --git a/requirements.txt b/requirements.txt
index 2da398c..5f47c66 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -15,7 +15,7 @@ port-for==0.3.1
 Pygments==2.2.0
 pyparsing==2.2.0
 pytz==2018.5
-PyYAML==3.13
+PyYAML==5.4
 requests==2.19.1
 six==1.11.0
 snowballstemmer==1.2.1