diff --git a/docs/Changelog.md b/docs/Changelog.md
index db3389176ce..f921bfc0ecd 100644
--- a/docs/Changelog.md
+++ b/docs/Changelog.md
@@ -2,6 +2,7 @@
 
 1.12.0 (Not released yet)
 -------------------------
+* [#4602](https://github.com/TouK/nussknacker/pull/4602) Cleaning subprocess usages after NU 1.11 release
 * [#4582](https://github.com/TouK/nussknacker/pull/4582) Fixed: Releasing app resources on the designer close 
 * [#4540](https://github.com/TouK/nussknacker/pull/4540) Improvement: Allow selecting a claim from OIDC JWT to represent the username
 * [#4555](https://github.com/TouK/nussknacker/pull/4555) Remove: Back compatibility for encoding/decoding UIParameter
diff --git a/docs/MigrationGuide.md b/docs/MigrationGuide.md
index c44a86eb5b3..6c215bb9d59 100644
--- a/docs/MigrationGuide.md
+++ b/docs/MigrationGuide.md
@@ -13,6 +13,9 @@ To see the biggest differences please consult the [changelog](Changelog.md).
   * `KafkaClient.sendMessage` accepts generic content with json encoder
 
 ### REST API changes
+* [#4602](https://github.com/TouK/nussknacker/pull/4602) Cleaning subprocess usages after NU 1.11 release
+  * Removed isSubprocess endpoint param, use isFragment from now on.
+  * Removed backward compatibility for subprocess fields.
 
 ### Other changes
 * [#4492](https://github.com/TouK/nussknacker/pull/4492) Allow to test fragments using ad hoc testing.