diff --git a/lib/charms/hpc_libs/v0/slurm_ops.py b/lib/charms/hpc_libs/v0/slurm_ops.py
index 5ca9be7..2629662 100644
--- a/lib/charms/hpc_libs/v0/slurm_ops.py
+++ b/lib/charms/hpc_libs/v0/slurm_ops.py
@@ -727,6 +727,8 @@ def generate(self) -> None:
         )
 
 
+# TODO: https://github.com/charmed-hpc/mungectl/issues/5 -
+#  Have `mungectl` set user and group permissions on the munge.key file.
 class _MungeKeyManager:
     """Control the munge key via `mungectl ...` commands."""