diff --git a/rrdtool.changes b/rrdtool.changes
index 23b0e3f..594d719 100644
--- a/rrdtool.changes
+++ b/rrdtool.changes
@@ -1,3 +1,15 @@
+-------------------------------------------------------------------
+Tue Mar 10 11:26:06 UTC 2015 - p.drouand@gmail.com
+
+- add rddtool.changes to sources list
+
+-------------------------------------------------------------------
+Wed Mar  4 15:35:01 UTC 2015 - kstreitova@suse.com
+
+- modify a %prep phase to replace all timestamps in *.c and *.h
+  with the date and time obtained from the last changelog entry
+  bnc#915946
+
 -------------------------------------------------------------------
 Thu Dec  4 16:40:33 UTC 2014 - kstreitova@suse.com
 
diff --git a/rrdtool.spec b/rrdtool.spec
index 1ad4b9e..38cebb5 100644
--- a/rrdtool.spec
+++ b/rrdtool.spec
@@ -1,7 +1,7 @@
 #
 # spec file for package rrdtool
 #
-# 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
@@ -55,6 +55,7 @@ Patch12:        rrdtool-zero_vs_nothing.patch
 Source2:        sysconfig.rrdcached
 Source4:        rrdcached-systemd-pre
 Source5:        rrdcached.service
+Source99:       %{name}.changes
 Url:            http://oss.oetiker.ch/rrdtool/
 Summary:        A tool for data logging and analysis
 License:        GPL-2.0+
@@ -161,6 +162,10 @@ pushd "cgilib-%{cgilib_version}"
 %patch11
 popd #cgilib
 %patch12 -p1
+modified="$(sed -n '/^----/n;s/ - .*$//;p;q' "%{_sourcedir}/%{name}.changes")"
+DATE="\"$(date -d "${modified}" "+%%b %%e %%Y")\"" 
+TIME="\"$(date -d "${modified}" "+%%R")\"" 
+find . -name '*.[ch]' | xargs sed -i "s/__DATE__/${DATE}/g;s/__TIME__/${TIME}/g"
 
 %build
 # first prepare cgilib