diff --git a/requirements/development.txt b/requirements/development.txt
index cdecd688..349e1b60 100644
--- a/requirements/development.txt
+++ b/requirements/development.txt
@@ -3,7 +3,7 @@
 bumpversion==0.5.3
 watchdog==0.8.3
 cryptography==2.0.3
-PyYAML==3.12
+PyYAML==5.1
 coverage==4.4.1
 pep8==1.7.0
 pylint==1.7.4