diff --git a/lib/upgrade.txt b/lib/upgrade.txt
index 75209ab0be6..31cd31fce84 100644
--- a/lib/upgrade.txt
+++ b/lib/upgrade.txt
@@ -2,6 +2,11 @@ This files describes API changes in core libraries and APIs,
 information provided here is intended especially for developers.
 
 === 3.4.3 ===
+
+* There is a new privacy API that every subsystem and plugin has to implement so that the site can become GDPR
+  compliant. Plugins use this API to report what information they store or process regarding users, and provide ability
+  to export and delete personal data. See https://docs.moodle.org/dev/Privacy_API for guidelines on how to implement the
+  privacy API in your plugin.
 * The following have been removed from the list of core subsystems:
    - core_register
    - core_publish
diff --git a/mod/upgrade.txt b/mod/upgrade.txt
index 1edbcadddd5..c4d60c80582 100644
--- a/mod/upgrade.txt
+++ b/mod/upgrade.txt
@@ -1,6 +1,13 @@
 This files describes API changes in /mod/* - activity modules,
 information provided here is intended especially for developers.
 
+=== 3.4.3 ===
+
+* There is a new privacy API that every subsystem and plugin has to implement so that the site can become GDPR
+  compliant. Activity modules use this API to report what information they store or process regarding users, and provide
+  ability to export and delete personal data. See https://docs.moodle.org/dev/Privacy_API for guidelines on how to
+  implement the privacy API in your activity module.
+
 === 3.4 ===
 
 * Navigation between activities via a previous and next link was added to Boost, Clean and Bootstrapbase. This