diff --git a/requirements.txt b/requirements.txt
index 3b9dcb8..333fe25 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 urllib3<1.25
 requests==2.22.0
 pytest<3.0
-pyyaml==5.2
+pyyaml==5.4
 MarkupSafe==1.1.1
 mako
 ply