diff -pruN 1.4.1-4/debian/changelog 1.4.1-5/debian/changelog
--- 1.4.1-4/debian/changelog	2021-10-24 21:20:24.000000000 +0000
+++ 1.4.1-5/debian/changelog	2022-08-01 04:08:24.000000000 +0000
@@ -1,3 +1,11 @@
+tlf (1.4.1-5) unstable; urgency=medium
+
+  * Team upload.
+  * Build with LTO (link time optimization) (Closes: #1015693)
+  * Bump Standards-Version to 4.6.1
+
+ -- tony mancill <tmancill@debian.org>  Sun, 31 Jul 2022 21:08:24 -0700
+
 tlf (1.4.1-4) unstable; urgency=medium
 
   * Team upload.
diff -pruN 1.4.1-4/debian/control 1.4.1-5/debian/control
--- 1.4.1-4/debian/control	2021-10-24 21:20:24.000000000 +0000
+++ 1.4.1-5/debian/control	2022-08-01 04:08:24.000000000 +0000
@@ -13,7 +13,7 @@ Build-Depends:
  libncurses5-dev,
  libxmlrpc-core-c3-dev,
  pkg-config,
-Standards-Version: 4.6.0
+Standards-Version: 4.6.1
 Homepage: https://tlf.github.io/
 Vcs-Git: https://salsa.debian.org/debian-hamradio-team/tlf.git
 Vcs-Browser: https://salsa.debian.org/debian-hamradio-team/tlf
diff -pruN 1.4.1-4/debian/rules 1.4.1-5/debian/rules
--- 1.4.1-4/debian/rules	2021-10-24 21:20:24.000000000 +0000
+++ 1.4.1-5/debian/rules	2022-08-01 04:08:24.000000000 +0000
@@ -1,7 +1,11 @@
 #!/usr/bin/make -f
 # -*- makefile -*-
 
-export DEB_BUILD_MAINT_OPTIONS = hardening=+all
+export DEB_BUILD_MAINT_OPTIONS = hardening=+all optimize=+lto
+
+# Work around "undefined reference" linker error when enabling LTO.
+# https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1015693
+export DEB_LDFLAGS_MAINT_APPEND = -u __wrap_refreshp
 
 # This file was originally written by Joey Hess and Craig Small.
 # As a special exception, when this file is copied by dh-make into a