diff --git a/CHANGELOG.md b/CHANGELOG.md
index 25102ac2c..a6532cbf6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Added
 
+* Deprecate Actors::BLOG_USER_ID and Actors::APPLICATION_USER_ID
 * A `pre_activitypub_get_upload_baseurl` filter
 * Fediverse Preview on post-overview page
 * GitHub action to enforce Changelog updates
diff --git a/readme.txt b/readme.txt
index 785a735dd..f410fe1f3 100644
--- a/readme.txt
+++ b/readme.txt
@@ -134,6 +134,7 @@ For reasons of data protection, it is not possible to see the followers of other
 
 = Dev =
 
+* Deprecate Actors::BLOG_USER_ID and Actors::APPLICATION_USER_ID
 * Added: A `pre_activitypub_get_upload_baseurl` filter
 * Added: Fediverse Preview on post-overview page
 * Added: GitHub action to enforce Changelog updates