diff --git a/setup.cfg b/setup.cfg
index 220a89d74..2b70a4407 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -20,7 +20,7 @@ python_requires = >=3.8
 install_requires =
     importlib-resources>=1.4.0;python_version<"3.9"
     tomli>=2.0;python_version<"3.11"
-    ruamel.yaml==0.18.5
+    ruamel.yaml==0.18.6
     jsonschema>=4.18.0,<5.0
     regress>=0.4.0
     requests<3.0