diff --git a/requirements_dev.txt b/requirements_dev.txt
index 2e9dd6f..84b2b71 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -7,7 +7,7 @@ tox==3.13.2
 coverage==4.5.4
 Sphinx==2.1.2
 cryptography==2.7
-PyYAML==5.1.1
+PyYAML==5.1.2
 pytest==5.0.1
 pytest-runner==5.1
 vcrpy==2.0.1