diff --git a/CHANGELOG.md b/CHANGELOG.md
index af5acbf1..a8f6d9b5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,31 @@
 
 ## 9.0.0
 
+### Breaking changes
+
+- Removed `Sentry.Sources`
+- Removed `Sentry.Client`, as it's an internal module
+- Removed the `Sentry.Event.sentry_exception/0` type
+- Removed `Sentry.Event.add_metadata/1`
+- Removed `Sentry.Event.culprit_from_stacktrace/1`
+- Removed `Sentry.Event.do_put_source_context/3`
+- Removed the `:async` value for the `:result` option in `Sentry.send_event/2` (and friends)
+- Removed `Sentry.CrashError` — now, crash reports (detected through `Sentry.LoggerBackend`) that do not contain exceptions are reported as *messages* in Sentry
+- Changed the shape of the `Sentry.Event` struct - check out the new fields (and typespec for `Sentry.Event.t/0`)
+
+### Various fixes & improvements
+
+- Add `Sentry.LoggerHandler`, which is a `:logger` handler rather than a `Logger` backend
+- Make the `Sentry.HTTPClient.child_spec/0` callback optional
+- Add `:all` as a possible value of the `:metadata` configuration option for `Sentry.LoggerBackend`
+- Add `:all` as a possible value for the `:included_environment` configuration option
+- Add `Sentry.Interfaces` with all the child modules, which are useful if you're working directly with the Sentry API
+- Fix an issue with JSON-encoding non-encodable terms (such as PIDs, which are pretty common)
+
+### Deprecations
+
+- Soft-deprecate `Sentry.EventFilter` in favour of `:before_send_event` callbacks.
+
 ### Various fixes & improvements
 
 - Remove manually-entered entries from the CHANGELOG (48cf37d9) by @whatyouhide
@@ -29,8 +54,6 @@
 - Clean up a bunch of little non-important things (18e83ae9) by @whatyouhide
 - Simplify test GenServer (30a9828e) by @whatyouhide
 
-_Plus 41 more_
-
 ## 8.1.0
 
 ### Various fixes & improvements