diff --git a/config-files/pam-config/centos/build_srpm.data b/config-files/pam-config/centos/build_srpm.data
index da1e20bd8..2c3b2cb8b 100644
--- a/config-files/pam-config/centos/build_srpm.data
+++ b/config-files/pam-config/centos/build_srpm.data
@@ -1,2 +1,2 @@
 SRC_DIR="files"
-TIS_PATCH_VER=0
+TIS_PATCH_VER=1
diff --git a/config-files/pam-config/centos/pam-config.spec b/config-files/pam-config/centos/pam-config.spec
index 369afd50b..4508f9e08 100644
--- a/config-files/pam-config/centos/pam-config.spec
+++ b/config-files/pam-config/centos/pam-config.spec
@@ -15,23 +15,31 @@ Summary: package StarlingX configuration files of pam to system folder.
 %description
 package StarlingX configuration files of pam to system folder.
 
+%define _pamconfdir %{_sysconfdir}/pam.d
+
 %prep
 %setup
 
 %build
 
 %install
-%define _pamconfdir %{_sysconfdir}/pam.d
 %{__install}  -d  %{buildroot}%{_pamconfdir}
+%{__install}  -d  %{buildroot}%{_datadir}/starlingx
 %{__install}  -m 644 common-account  %{buildroot}%{_pamconfdir}/common-account
 %{__install}  -m 644 common-auth     %{buildroot}%{_pamconfdir}/common-auth
 %{__install}  -m 644 common-password %{buildroot}%{_pamconfdir}/common-password
 %{__install}  -m 644 common-session  %{buildroot}%{_pamconfdir}/common-session
 %{__install}  -m 644 common-session-noninteractive %{buildroot}%{_pamconfdir}/common-session-noninteractive
+%{__install}  -m 644 system-auth.pamd %{buildroot}%{_datadir}/starlingx/stx.system-auth
 
 %post
+if [ $1 -eq 1 ] ; then
+    # Initial installation
+    cp -f %{_datadir}/starlingx/stx.system-auth %{_pamconfdir}/system-auth
+fi
 
 %files
+%{_datadir}/starlingx/stx.system-auth
 %config(noreplace) %{_pamconfdir}/common-account
 %config(noreplace) %{_pamconfdir}/common-auth
 %config(noreplace) %{_pamconfdir}/common-password