diff --git a/requirements_dev.txt b/requirements_dev.txt
index 3f5cc38..ae31944 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -7,7 +7,7 @@ tox==3.24.2
 coverage==5.5
 cryptography==3.4.8
 Sphinx==4.1.2
-PyYAML==5.4.1
+PyYAML==6.0
 pytest==6.2.4
 pytest-runner==5.3.1
 vcrpy==2.1.1