diff --git a/common/CI/config.yaml b/common/CI/config.yaml
index 2338413d549..df5e490306b 100644
--- a/common/CI/config.yaml
+++ b/common/CI/config.yaml
@@ -1,4 +1,6 @@
 ---
+# Configuration for a repository freeze.
+# Dates can be generated using `date --iso-8601=s`.
 freeze:
   start: "2024-09-27T23:59:59+00:00"
   end: "2024-10-13T23:59:59+00:00"