diff --git a/pyproject.toml b/pyproject.toml
index 94f3794..004a59d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -12,7 +12,7 @@ homepage = "https://dev.mycrobase.de/gitea/cn/kube-stale-resources"
 
 [tool.poetry.dependencies]
 python = "^3.8"
-pyyaml = "5.3.1"
+pyyaml = "5.4.1"
 requests = "~2.25"
 
 [tool.poetry.dev-dependencies]