diff --git a/CHANGELOG.md b/CHANGELOG.md
index 25ba605ca5..e73e876cda 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,22 +10,29 @@
 * Realm Studio: 13.0.0 or later.
 
 ### Internal
-* Using Core x.y.z.
+* Using Core 13.20.1.
 
 ## 11.5.0 (2023-09-15)
 
 ### Enhancements
 * Streamlined some of the error codes reported in `SessionException`. A few error codes have been combined and some have been deprecated since they are no longer reported by the server. (Issue [#3295](https://github.com/realm/realm-dotnet/issues/3295))
+* Full text search supports searching for prefix only. Eg. "description TEXT 'alex*'". (Core 13.18.0)
+* Unknown protocol errors received from Atlas Device Sync will no longer cause the application to crash if a valid error action is also received. Unknown error actions will be treated as an ApplicationBug error action and will cause sync to fail with an error via the sync error handler. (Core 13.18.0)
+* Added support for server log messages that are enabled by sync protocol version 10. Appservices request id will be provided in a server log message in a future server release. (Core 13.19.0)
 
 ### Fixed
 * Fixed the message of the `MissingMemberException` being thrown when attempting to access a non-existent property with the dynamic API. (PR [#3432](https://github.com/realm/realm-dotnet/pull/3432))
 * Fixed a `Cannot marshal generic Windows Runtime types with a non Windows Runtime type as a generic type argument` build error when using .NET Native. (Issue [#3434](https://github.com/realm/realm-dotnet/issues/3434), since 11.4.0)
+* Fix failed assertion for unknown app server errors. (Core 13.17.2)
+* Running a query on @keys in a Dictionary would throw an exception. (Core 13.17.2)
+* Fixed crash in slab allocator (`Assertion failed: ref + size <= next->first`). (Core 13.20.1)
+* Sending empty UPLOAD messages may lead to 'Bad server version' errors and client reset. (Core 13.20.1)
 
 ### Compatibility
 * Realm Studio: 13.0.0 or later.
 
 ### Internal
-* Using Core x.y.z.
+* Using Core 13.20.1.
 
 ## 11.4.0 (2023-08-16)