diff --git a/requirements.txt b/requirements.txt
index 11bf6cd..22ed0fe 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -8,7 +8,7 @@ idna==2.6
 pluggy==0.6.0
 py==1.5.2
 pytest==3.4.0
-PyYAML==3.12
+PyYAML==5.4
 requests==2.18.4
 six==1.11.0
 urllib3==1.22