diff --git a/shadow-pam-shadow b/shadow-pam-shadow
index 47ac148..7bb181f 100644
--- a/shadow-pam-shadow
+++ b/shadow-pam-shadow
@@ -1,8 +1,7 @@
 #%PAM-1.0
-auth	   sufficient 	pam_rootok.so
+auth       sufficient   pam_rootok.so
 auth       required     pam_nologin.so
 account    include      system-auth
-password   sufficient   pam_permit.so
+password   required     pam_unix.so md5 shadow
 session    include      system-auth
 session    required     pam_limits.so
-#session    optional     pam_console.so
diff --git a/shadow.spec b/shadow.spec
index 07bba42..4c35b9c 100644
--- a/shadow.spec
+++ b/shadow.spec
@@ -3,7 +3,7 @@ Summary:       Utilities for managing shadow password files and user/group accou
 Name:          shadow
 Version:       4.8.1
 Group:         Applications/Security
-Release:       1mamba
+Release:       2mamba
 Vendor:        openmamba
 Distribution:  openmamba
 Packager:      Silvan Calarco <silvan.calarco@mambasoft.it>
@@ -264,6 +264,9 @@ exit 0
 %{_mandir}/man8/nologin.8*
 
 %changelog
+* Sun Jan 31 2021 Silvan Calarco <silvan.calarco@mambasoft.it> 4.8.1-2mamba
+- shadow-pam-shadow: fix chpasswd by setting password field to use pam_unix.so
+
 * Fri Feb 07 2020 Automatic Build System <autodist@mambasoft.it> 4.8.1-1mamba
 - automatic version update by autodist