diff -pruN 2.5.4-5/debian/changelog 2.5.4-6/debian/changelog
--- 2.5.4-5/debian/changelog	2025-08-30 09:36:25.000000000 +0000
+++ 2.5.4-6/debian/changelog	2025-10-20 15:59:20.000000000 +0000
@@ -1,3 +1,9 @@
+libtool (2.5.4-6) unstable; urgency=medium
+
+  * Depend on automake >= 1.18. Closes: #1118312
+
+ -- Alastair McKinstry <mckinstry@debian.org>  Mon, 20 Oct 2025 16:59:20 +0100
+
 libtool (2.5.4-5) unstable; urgency=medium
 
   [ Alastair McKinstry ]
diff -pruN 2.5.4-5/debian/control 2.5.4-6/debian/control
--- 2.5.4-5/debian/control	2025-08-30 09:36:25.000000000 +0000
+++ 2.5.4-6/debian/control	2025-10-20 15:59:20.000000000 +0000
@@ -2,7 +2,7 @@ Source: libtool
 Build-Depends: debhelper-compat (= 13),
   file,
   gfortran-for-host | fortran95-compiler,
-  automake (>= 1:1.14.1-3),
+  automake (>= 1:1.18.1-2),
   autoconf (>= 2.69-7),
   help2man,
   texinfo,
@@ -24,6 +24,7 @@ Multi-Arch: foreign
 Depends: gcc | c-compiler, cpp, libc6-dev | libc-dev,
   file,
   autotools-dev,
+  automake (>= 1:1.18.1-2),
   ${misc:Depends}
 Suggests: libtool-doc, autoconf, automaken, gfortran | fortran95-compiler
 Recommends: libltdl-dev