diff --git a/requirements.txt b/requirements.txt
index 9b342986..2a1d1205 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -16,7 +16,7 @@ py==1.8.0
 #pylint==1.5.2
 # requires Python 3.5+
 #pytest==5.2.1
-PyYAML==5.1.2
+PyYAML==5.3.1
 requests==2.22.0
 requests-kerberos==0.12.0
 six==1.12.0