diff --git a/docs/customresourcestate-metrics.md b/docs/customresourcestate-metrics.md
index 14345c00..4e0f5e5e 100644
--- a/docs/customresourcestate-metrics.md
+++ b/docs/customresourcestate-metrics.md
@@ -150,7 +150,7 @@ spec:
               # label values can be resolved specific to this path 
               labelsFromPath:
                 active: [active]
-              # The actual field to use as metric value. Should be a number.
+              # The actual field to use as metric value. Should be a number, boolean or RFC3339 timestamp string.
               valueFrom: [ready]
           commonLabels:
             custom_metric: "yes"