diff --git a/Changelog b/Changelog
index 6b8b1370..d3c2c549 100644
--- a/Changelog
+++ b/Changelog
@@ -1,6 +1,7 @@
 Next:
     * #3911: [dcl] Integrate resend activation link into dcl landing payment page
     * #3972: [hosting] Add ungleich company info to invoice footer
+    * #3974: [hosting] Improve invoice number: Show 404 for invoice resources that do not belong to the user
 1.2.13: 2017-12-09
     * [cms] Introduce UngleichHeaderBackgroundImageAndTextSliderPlugin that allows to have scrolling images and texts
     * [cms] Remove <p> tag for ungleich cms customer item template