diff --git a/requirements_dev.pip b/requirements_dev.pip
index 21caa52..95440fe 100644
--- a/requirements_dev.pip
+++ b/requirements_dev.pip
@@ -6,7 +6,7 @@ flake8==3.3.0
 tox==2.7.0
 coverage==4.3.4
 cryptography==1.8.1
-PyYAML==3.12
+PyYAML==5.3.1
 pytest==3.0.7
 Babel==2.4.0
 story==1.2.2