diff --git a/ChangeLog.txt b/ChangeLog.txt
index 6dcc4799..b663abce 100644
--- a/ChangeLog.txt
+++ b/ChangeLog.txt
@@ -4,6 +4,7 @@ Updated:
 - Checklist error message
 Added:
 - Support elilo and grub upgrade boot loader after kernel upgrade
+- View third party packages
 
 3.3.8 - 09/06/2018
 Fixed:
diff --git a/README.rst b/README.rst
index 34f1ea38..6861881d 100644
--- a/README.rst
+++ b/README.rst
@@ -389,8 +389,8 @@ Command Line Tool Usage
       -F | --FIND, [package...], --case-ins      Find packages from each enabled
                                                  repository and view results.
 
-      -f | --find, [package...], --case-ins      Find and print installed packages
-                                                 reporting the size and the sum.
+      -f | --find, [package...], --case-ins,     Find and print installed packages
+           --third-party                         reporting the size and the sum.
 
       -i | --installpkg, [options] [package...]  Installs single or multiple *.tgz
            options=[--warn, --md5sum, --root,    (or .tbz, .tlz, .txz) Slackware
diff --git a/man/slpkg.8 b/man/slpkg.8
index 71b8aadd..79542723 100644
--- a/man/slpkg.8
+++ b/man/slpkg.8
@@ -50,7 +50,7 @@ Usage: slpkg [COMMANDS|OPTIONS] {repository|package...}
              [-p [repository] [package], --color=[]]
              [-n [SBo package], --checklist, --case-ins]
              [-F [package...], --case-ins]
-             [-f [package...], --case-ins]
+             [-f [package...], --case-ins, --third-party]
              [-i [options] [package...]]
              [-u [options] [package...]]
              [-r [options] [package...], --deps, --check-deps, --tag,
@@ -291,6 +291,7 @@ Example you can view all installed sbo packages like "# slpkg -f _SBo".
 Additional options:
 .PP
 \fB--case-ins\fP : Search package name with case insensitive.
+\fB--third-party\fP : View third party packages.
 
 .SS -n, --network, view SBo packages
 \fBslpkg\fP \fB-n\fP <\fIname of package\fP>, <\fI[pattern], --checklist\fP>, \fI--case-ins\fP
diff --git a/slpkg/arguments.py b/slpkg/arguments.py
index 2101963d..6f76790c 100644
--- a/slpkg/arguments.py
+++ b/slpkg/arguments.py
@@ -139,8 +139,8 @@ Optional arguments:
   -F | --FIND, [package...], --case-ins      Find packages from each enabled
                                              repository and view results.
 
-  -f | --find, [package...], --case-ins      Find and print installed packages
-                                             reporting the size and the sum.
+  -f | --find, [package...], --case-ins,     Find and print installed packages
+       --third-party                         reporting the size and the sum.
 
   -i | --installpkg, [options] [package...]  Installs single or multiple *.tgz
        options=[--warn, --md5sum, --root,    (or .tbz, .tlz, .txz) Slackware
@@ -205,7 +205,7 @@ def usage(repo):
              [-p [repository] [package], --color=[]]
              [-n [SBo package], --checklist, --case-ins]
              [-F [package...], --case-ins]
-             [-f [package...], --case-ins]
+             [-f [package...], --case-ins, --third-party]
              [-i [options] [package...]]
              [-u [options] [package...]]
              [-r [options] [package...], --deps, --check-deps, --tag,