diff --git a/requirements.txt b/requirements.txt
index a6103c7..5a6fbf1 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 click==6.6
 invoke==0.13.0
-PyYaml==3.11
+PyYaml==5.1
 six==1.7.3
 virtualenv==1.11.6