diff --git a/requirements.txt b/requirements.txt
index b1bd56b1c9..39dd1fc8e4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,7 +4,7 @@ prettytable==0.7.2
 Jinja2>=2.7.3,<=2.10
 intelhex>=1.3,<=2.2.1
 junit-xml==1.8
-pyYAML==3.13
+pyyaml==4.2b1
 urllib3[secure]==1.23
 requests>=2.20,<2.21
 intervaltree>=2,<3