diff --git a/requirements_dev.txt b/requirements_dev.txt
index 4c497e4..23d2fbc 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -6,5 +6,5 @@ flake8==3.5.0
 coverage==4.4.2
 Sphinx==1.6.5
 cryptography>=2
-PyYAML==3.13
+PyYAML==5.4
 awscli==1.16.87