diff --git a/ghc-rpm-macros.spec b/ghc-rpm-macros.spec
index 8ed8ba6..46cb7cb 100644
--- a/ghc-rpm-macros.spec
+++ b/ghc-rpm-macros.spec
@@ -10,8 +10,8 @@
 #%%global without_hscolour 1
 
 Name:           ghc-rpm-macros
-Version:        2.0.12
-Release:        3%{?dist}
+Version:        2.0.13
+Release:        1%{?dist}
 Summary:        RPM macros for building Haskell packages for GHC
 
 License:        GPLv3+
@@ -217,6 +217,10 @@ EOF
 
 
 %changelog
+* Tue Aug  4 2020 Jens Petersen <petersen@redhat.com> - 2.0.13-1
+- disable LTO on (unregisterised) s390x (#1863601)
+  to prevent linker warning flood for prof libraries
+
 * Mon Jul 27 2020 Fedora Release Engineering <releng@fedoraproject.org> - 2.0.12-3
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_33_Mass_Rebuild
 
diff --git a/macros.ghc b/macros.ghc
index 5cd24b9..aed8d80 100644
--- a/macros.ghc
+++ b/macros.ghc
@@ -13,6 +13,7 @@ LANG=C.utf8\
 %ghc_set_gcc_flags\
 # -Wunused-label is extremely noisy\
 %ifarch s390x\
+%define _lto_cflags %{nil}\
 CFLAGS="${CFLAGS:-$(echo %optflags | sed -e 's/-Wall //' -e 's/-Werror=format-security //')}"\
 %else\
 CFLAGS="${CFLAGS:-%optflags}"\