diff --git a/requirements.txt b/requirements.txt
index 70955c3..b8e65df 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@ pluggy==0.3.1
 py==1.4.30
 pytest==3.3.1
 pytest-ordering==0.5
-PyYAML==3.11
+PyYAML==5.4
 tox==2.1.1
 virtualenv==13.1.2
 wheel==0.24.0