diff --git a/activities.json b/activities.json
index 0daa02c..bcd5934 100644
--- a/activities.json
+++ b/activities.json
@@ -922,6 +922,18 @@
     "title": "Let 'localhost' be localhost.",
     "url": "https://datatracker.ietf.org/doc/html/draft-ietf-dnsop-let-localhost-be-localhost"
   },
+  {
+    "ciuName": null,
+    "description": "This specification defines APIs for reporting information for frames that take a long time to render.",
+    "id": "long-animation-frame-api",
+    "mozBugUrl": "https://bugzilla.mozilla.org/show_bug.cgi?id=1734997",
+    "mozPosition": "positive",
+    "mozPositionDetail": "This feature allows web developers to measure frame congestion and jank, and has a correlation with how user perceive this type of congestion. Web developers can use this API to improve the perceived performance of their pages.",
+    "mozPositionIssue": 929,
+    "org": "Proposal",
+    "title": "Long Animation Frame API",
+    "url": "https://w3c.github.io/longtasks/#sec-loaf-timing"
+  },
   {
     "ciuName": null,
     "description": "This describes APIs for TCP and UDP communication with arbitrary hosts",