diff --git a/requirements.txt b/requirements.txt
index ae2dc20..d52dfdf 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -16,7 +16,7 @@ pep8==1.7.0
 py==1.4.31
 pytest==2.9.2
 pytest-sugar==0.7.1
-PyYAML==3.11
+PyYAML==5.1
 recommonmark==0.4.0
 requests==2.10.0
 singledispatch==3.4.0.3