diff -Nru gawk-4.2.1+dfsg/debian/changelog gawk-4.2.1+dfsg/debian/changelog
--- gawk-4.2.1+dfsg/debian/changelog	2018-09-14 15:25:25.000000000 +0000
+++ gawk-4.2.1+dfsg/debian/changelog	2019-01-24 13:50:53.000000000 +0000
@@ -1,3 +1,9 @@
+gawk (1:4.2.1+dfsg-1build1) disco; urgency=medium
+
+  * No-change rebuild for readline soname change.
+
+ -- Matthias Klose <doko@ubuntu.com>  Thu, 24 Jan 2019 14:50:53 +0100
+
 gawk (1:4.2.1+dfsg-1) unstable; urgency=low
 
   * New upstream release. (Closes: #907552)