diff --git a/requirements_dev.txt b/requirements_dev.txt
index 5fe4509..3ccab62 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -7,7 +7,7 @@ tox==3.25.0
 coverage==6.2
 cryptography==35.0.0
 Sphinx==4.5.0
-PyYAML==5.4.1
+PyYAML==6.0
 pytest==6.2.5
 pytest-runner==5.3.1
 vcrpy==2.1.1