diff --git a/requirements/dev.txt b/requirements/dev.txt
index 0465f85..52a9777 100644
--- a/requirements/dev.txt
+++ b/requirements/dev.txt
@@ -6,7 +6,7 @@ hypothesis ~= 6.2
 importlib-metadata < 5.0
 mypy ~= 0.812
 nose ~= 1.3
-PyYAML ~= 5.4
+PyYAML ~= 6.0.1
 pytest ~= 6.2
 pytest-cov ~= 2.11
 pytest-mock ~= 3.5