diff --git a/extensions/amp-live-list/amp-live-list.md b/extensions/amp-live-list/amp-live-list.md
index 861946a92856..32fed35769cb 100644
--- a/extensions/amp-live-list/amp-live-list.md
+++ b/extensions/amp-live-list/amp-live-list.md
@@ -25,6 +25,8 @@ limitations under the License.
 
 # amp-live-list
 
+Warning: Currently, content served via an AMP cache may be slow to receive live updates. Read more [here](https://github.com/ampproject/amphtml/issues/13659)
+
 A wrapper and minimal UI for content that updates live in the client instance as new content is available in the source document.
 
 <table>