diff --git a/changelog.mdx b/changelog.mdx
index c1db3554d..85dd19078 100644
--- a/changelog.mdx
+++ b/changelog.mdx
@@ -7,6 +7,24 @@ keywords: ["changelog", "API updates", "release notes", "what's new", "API chang
 
 To subscribe to updates, please [**“Turn on notifications”**](https://help.x.com/en/managing-your-account/notifications-on-mobile-devices#:~:text=In%20the%20top%20menu,%20you,you%20would%20like%20to%20receive) for [**@API**](https://x.com/api). You can also follow this changelog in your feed reader via the [**RSS feed**](https://docs.x.com/changelog/rss.xml).
 
+<Update label="Aug 30, 2026" description="X API v2">
+  ### Filter qualifiers for X Activity API subscriptions
+
+  We added an optional `filter.qualifiers` map to [X Activity API](/x-api/activity/introduction) subscriptions. Qualifiers let you narrow which events match a subscription: use `conversation_type` (`direct` or `group`) on `chat.received`, and `direction` (`inbound` or `outbound`) on `follow.follow`, `follow.unfollow`, and `like.create`. Each subscription supports up to 8 qualifiers, and unsupported keys or values return a 400 error. Learn more in the [Filter qualifiers](/x-api/activity/introduction#filter-qualifiers) section.
+
+  ### Broadcast start and end events for X Activity API
+
+  We added two new public event types to the [X Activity API](/x-api/activity/introduction): `broadcast.start` and `broadcast.end`. Subscribe by User ID to receive real-time notifications when a user starts or ends a live broadcast. Both events work with either app-only or user-context authentication. See sample payloads in the [event payloads reference](/x-api/activity/event-payloads).
+
+  ### New endpoint to check your PPU credit balance
+
+  We added [`GET /2/usage/credits`](/x-api/usage/get-usage-credits), a new endpoint that returns your Pay-Per-Use (PPU) credit balance in USD. Use it to monitor your remaining credits programmatically alongside the existing [usage endpoints](/x-api/usage/introduction).
+
+  ### `is_subscriber` field in `broadcast.chat` events
+
+  The `broadcast.chat` event payload in the X Activity API now includes an `is_subscriber` boolean, indicating whether the chat message author is a subscriber of the broadcaster. See the [event payloads reference](/x-api/activity/event-payloads) for an example.
+</Update>
+
 <Update label="Aug 13, 2026" description="X Ads API">
   ### Updated `video_total_views` definition