diff -Nru libtool-2.4.6/debian/changelog libtool-2.4.6/debian/changelog
--- libtool-2.4.6/debian/changelog	2020-02-16 12:06:34.000000000 +0000
+++ libtool-2.4.6/debian/changelog	2020-03-02 09:35:42.000000000 +0000
@@ -1,3 +1,10 @@
+libtool (2.4.6-14) unstable; urgency=medium
+
+  * Add Breaks/Replaces on libtool-doc. Closes: #950916
+  * Ack bug fixed in -12 release: Closes: #929184
+
+ -- Alastair McKinstry <mckinstry@debian.org>  Mon, 02 Mar 2020 09:35:42 +0000
+
 libtool (2.4.6-13) unstable; urgency=medium
 
   * Drop d/libtool.docs; ship the docs in libtool-docs.
diff -Nru libtool-2.4.6/debian/control libtool-2.4.6/debian/control
--- libtool-2.4.6/debian/control	2020-02-16 12:06:34.000000000 +0000
+++ libtool-2.4.6/debian/control	2020-03-02 09:35:42.000000000 +0000
@@ -63,6 +63,8 @@
 Multi-Arch: foreign
 Section: doc
 Depends: ${misc:Depends}
+Breaks: libtool (<< 2.4.6-13)
+Replaces: libtool (<< 2.4.6-13)
 Conflicts: libtool1.4-doc
 Description: Generic library support script
  This package contains the GNU libtool documentation.