diff --git a/pyproject.toml b/pyproject.toml
index 32346e9..76fe7db 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -20,7 +20,7 @@ dependencies = [
         "pexpect==4.8.0",
         "python-minifier==2.9.0",
         "cfn-lint==0.83.0",
-        "ruamel.yaml==0.18.2",
+        "ruamel.yaml==0.18.5",
         "pulumi==3.89.0",
         "pulumi-aws==6.6.1",
         "pulumi-aws-native==0.82.0",