diff --git a/net-snmp.spec b/net-snmp.spec
index 8bd203b..2ad4d8e 100644
--- a/net-snmp.spec
+++ b/net-snmp.spec
@@ -3,7 +3,7 @@
 Summary: A collection of SNMP protocol tools and libraries.
 Name: net-snmp
 Version: 5.1.2
-Release: 3
+Release: 4
 License: BSDish
 Group: System Environment/Daemons
 Source0: ftp://net-snmp.sourceforge.net/net-snmp-%{version}.tar.gz
@@ -30,6 +30,8 @@ Patch15: net-snmp-5.1.1-ipAdEntIfIndex.patch
 Patch16: net-snmp-5.1.1-quiet-memshared.patch
 Patch17: net-snmp-5.0.9-smux-stack-var.patch
 Patch18: net-snmp-5.1.2.rc1-agentx-little64.patch
+Patch19: net-snmp-5.1.2-lelf.patch
+Patch20: net-snmp-5.0.9-HUP_doublefree.patch
 Prereq: /sbin/chkconfig
 Obsoletes: ucd-snmp
 BuildRoot: %{_tmppath}/%{name}-root
@@ -79,6 +81,7 @@ Group: Development/Libraries
 Summary: The development environment for the NET-SNMP project.
 Requires: net-snmp = %{version}
 Obsoletes: ucd-snmp-devel
+BuildPrereq: elfutils-libelf-devel
 
 %description devel
 The net-snmp-devel package contains the development libraries and
@@ -126,6 +129,8 @@ Install the net-snmp-perl package, if you want to use mib2c or SNMP with perl.
 %patch16 -p1 -b .quiet-memshared
 %patch17 -p1 -b .stack
 %patch18 -p1 -b .agentx-little64
+%patch19 -p1 -b .lelf
+%patch20 -p1 -b .hup
 
 # Do this patch with a perl hack...
 perl -pi -e "s|'\\\$install_libdir'|'%{_libdir}'|" ltmain.sh
@@ -286,6 +291,11 @@ rm -rf ${RPM_BUILD_ROOT}
 %attr(0644,root,root)   %{_mandir}/man3/*.3pm.*
 
 %changelog
+* Wed Sep 08 2004 Radek Vokal <rvokal@redhat.com> 5.1.2-4
+- New prereq for net-snmp-devel
+- lelf check removed from configure.in (#128748)
+- fixed snmpd coredump when sent SIGHUP (#127314)
+
 * Tue Sep 07 2004 Radek Vokal <rvokal@redhat.com> 5.1.2-3
 - Agentx failed to send trap, fixed (#130752, #122338)