diff --git a/doc/CHANGELOG b/doc/CHANGELOG
index 9b9d146a1..ae7ac9aaf 100644
--- a/doc/CHANGELOG
+++ b/doc/CHANGELOG
@@ -4,6 +4,29 @@ Redmine - project management software
 Copyright (C) 2006-  Jean-Philippe Lang
 https://www.redmine.org/
 
+== 2025-01-29 v5.1.6
+
+=== [Code cleanup/refactoring]
+
+* Patch #41961: Use `fixtures :all` to ensure consistent test data and improve test reliability
+* Patch #42140: Update footer copyright year to 2025
+
+=== [Gems support]
+
+* Defect #42013: Redmine fails to start with error: Unknown database adapter `"mysql2"` found in config/database.yml
+
+=== [Issues]
+
+* Defect #42066: NoMethodError exception occurs in IssuePriority#high and #low when both default and active priorities are absent
+
+=== [Permissions and roles]
+
+* Defect #42106: Member roles are incorrectly added when a user's memberships are updated
+
+=== [Rails support]
+
+* Defect #42113: Redmine 5.x not starting with ActiveSupport Logger error
+
 == 2024-12-11 v5.1.5
 
 === [Accounts / authentication]
diff --git a/lib/redmine/version.rb b/lib/redmine/version.rb
index ac10c5f83..1c4dc4ae5 100644
--- a/lib/redmine/version.rb
+++ b/lib/redmine/version.rb
@@ -7,7 +7,7 @@ module Redmine
   module VERSION
     MAJOR = 5
     MINOR = 1
-    TINY  = 5
+    TINY  = 6
 
     # Branch values:
     # * official release: nil