diff --git a/pyproject.toml b/pyproject.toml
index 89367746..e669a8ce 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -21,7 +21,7 @@ classifiers=[
     "Topic :: Games/Entertainment :: Arcade"
     ]
 dependencies = [
-    "ruamel.yaml == 0.15.42",  # 0.15.x newer than this requires compiled c lib, currently no Mac arm versions, 0.16+ require code refactor
+    "ruamel.yaml == 0.17.21",  # 0.15.x newer than this requires compiled c lib, currently no Mac arm versions, 0.16+ require code refactor
     "mpf >= 0.56.0.dev33",
     "kivy == 2.1.0",  # Mar 6, 2022
     "psutil == 5.9.4",  # Nov 7, 2022