diff --git a/libgcrypt.changes b/libgcrypt.changes
index df01bd7..6169fca 100644
--- a/libgcrypt.changes
+++ b/libgcrypt.changes
@@ -1,3 +1,15 @@
+-------------------------------------------------------------------
+Fri Feb  6 18:42:28 UTC 2015 - coolo@suse.com
+
+- making the build reproducible - see 
+  http://lists.gnupg.org/pipermail/gnupg-commits/2014-September/010683.html
+  for a very similiar problem
+
+-------------------------------------------------------------------
+Fri Feb  6 18:30:26 UTC 2015 - coolo@suse.com
+
+- fix filename for info pages in %post scripts
+
 -------------------------------------------------------------------
 Wed Nov  5 20:37:24 UTC 2014 - andreas.stieger@gmx.de
 
diff --git a/libgcrypt.spec b/libgcrypt.spec
index 2643d70..02a54bf 100644
--- a/libgcrypt.spec
+++ b/libgcrypt.spec
@@ -1,7 +1,7 @@
 #
 # spec file for package libgcrypt
 #
-# Copyright (c) 2014 SUSE LINUX Products GmbH, Nuernberg, Germany.
+# Copyright (c) 2015 SUSE LINUX GmbH, Nuernberg, Germany.
 #
 # All modifications and additions to the file contributed by third parties
 # remain the property of their copyright owners, unless otherwise agreed
@@ -36,6 +36,7 @@ Source4:        %{name}.keyring
 # cavs test framework
 Source5:        cavs-test.sh
 Source6:        cavs_driver.pl
+Source99:       %{name}.changes
 Patch0:         %{name}-ppc64.patch
 Patch1:         %{name}-strict-aliasing.patch
 Patch3:         %{name}-1.4.1-rijndael_no_strict_aliasing.patch
@@ -177,6 +178,8 @@ understanding of applied cryptography is required to use Libgcrypt.
 echo building with build_hmac256 set to %{build_hmac256}
 %{?suse_update_config}
 autoreconf -fi
+date=$(date -u +%Y-%m-%dT%H:%M+0000 -r %{S:99})
+sed -e "s,BUILD_TIMESTAMP=.*,BUILD_TIMESTAMP=$date," -i configure
 export CFLAGS="%{optflags} $(getconf LFS_CFLAGS)"
 %configure --with-pic \
            --enable-noexecstack \
@@ -243,13 +246,13 @@ mv %{buildroot}%{_bindir}/drbg_test %{buildroot}%{cavs_dir}
 
 %post devel
 %install_info --info-dir=%{_infodir} %{_infodir}/gcrypt.info.gz
-%install_info --info-dir=%{_infodir} %{_infodir}/gcrypt-1.info.gz
-%install_info --info-dir=%{_infodir} %{_infodir}/gcrypt-2.info.gz
+%install_info --info-dir=%{_infodir} %{_infodir}/gcrypt.info-1.gz
+%install_info --info-dir=%{_infodir} %{_infodir}/gcrypt.info-2.gz
 
 %postun devel
 %install_info_delete --info-dir=%{_infodir} %{_infodir}/gcrypt.info.gz
-%install_info_delete --info-dir=%{_infodir} %{_infodir}/gcrypt-1.info.gz
-%install_info_delete --info-dir=%{_infodir} %{_infodir}/gcrypt-2.info.gz
+%install_info_delete --info-dir=%{_infodir} %{_infodir}/gcrypt.info-1.gz
+%install_info_delete --info-dir=%{_infodir} %{_infodir}/gcrypt.info-2.gz
 
 %files -n %{libsoname}
 %defattr(-,root,root)