diff --git a/storage/synology/snmp/mode/upgrade.pm b/storage/synology/snmp/mode/upgrade.pm
new file mode 100644
index 000000000..7b3c61ecd
--- /dev/null
+++ b/storage/synology/snmp/mode/upgrade.pm
@@ -0,0 +1,132 @@
+#
+# Copyright 2020 Centreon (http://www.centreon.com/)
+#
+# Centreon is a full-fledged industry-strength solution that meets
+# the needs in IT infrastructure and application monitoring for
+# service performance.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+package storage::synology::snmp::mode::upgrade;
+
+use base qw(centreon::plugins::templates::counter);
+
+use strict;
+use warnings;
+use centreon::plugins::templates::catalog_functions qw(catalog_status_threshold);
+
+sub set_counters {
+    my ($self, %options) = @_;
+
+    $self->{maps_counters_type} = [
+        { name => 'global', type => 1, cb_prefix_output => 'prefix_output' }
+    ];
+
+    $self->{maps_counters}->{global} = [
+        { label => 'status', set => {
+                key_values => [
+                    { name => 'model' }, { name => 'version' }, { name => 'upgrade' }
+                ],
+                closure_custom_output => $self->can('custom_status_output'),
+                closure_custom_perfdata => sub { return 0; },
+                closure_custom_threshold_check => \&catalog_status_threshold
+            }
+        }
+    ];
+}
+
+sub custom_status_output {
+    my ($self, %options) = @_;
+
+    return 'version is \'' . $self->{result_values}->{version} . '\', upgrade is \'' . $self->{result_values}->{upgrade} . '\''
+}
+
+sub prefix_output {
+    my ($self, %options) = @_;
+
+    return '\'' . $options{instance_value}->{model} . '\' : ';
+}
+
+sub new {
+    my ($class, %options) = @_;
+    my $self = $class->SUPER::new(package => __PACKAGE__, %options, force_new_perfdata => 1);
+    bless $self, $class;
+
+    $options{options}->add_options(arguments => {
+        'warning-status:s'  => { name => 'warning_status', default => '%{upgrade} ne "unavailable"' },
+        'critical-status:s' => { name => 'critical_status', default => '' },
+    });
+
+    return $self;
+}
+
+sub check_options {
+    my ($self, %options) = @_;
+    $self->SUPER::check_options(%options);
+    
+    $self->change_macros(macros => ['warning_status', 'critical_status']);
+}
+
+my %states = (
+    1 => 'available',
+    2 => 'unavailable',
+    3 => 'connecting',
+    4 => 'disconnected',
+    5 => 'others'
+);
+
+my $mapping = {
+    modelName        => { oid => '.1.3.6.1.4.1.6574.1.5.1' },
+    version          => { oid => '.1.3.6.1.4.1.6574.1.5.3' },
+    upgradeAvailable => { oid => '.1.3.6.1.4.1.6574.1.5.4' }
+};
+
+sub manage_selection {
+    my ($self, %options) = @_;
+
+    my $results = $options{snmp}->get_leef(
+        oids => [ map($_->{oid} . '.0', values(%$mapping)) ],
+        nothing_quit => 1
+    );
+    my $result = $options{snmp}->map_instance(mapping => $mapping, results => $results, instance => 0);
+
+    $self->{global}->{0}->{model} = $result->{modelName};
+    $self->{global}->{0}->{version} = $result->{version};
+    $self->{global}->{0}->{upgrade} = $states{$result->{upgradeAvailable}};
+
+}
+
+1;
+
+__END__
+
+=head1 MODE
+
+Check upgrade status
+
+=over 8
+
+=item B<--warning-status>
+
+Set warning threshold for status (Default : '%{upgrade} ne "unavailable"').
+Can used special variables like: %{model}, %{version}, %{upgrade}
+
+=item B<--critical-status>
+
+Set critical threshold for status.
+Can used special variables like: %{model}, %{version}, %{upgrade}
+
+=back
+
+=cut
diff --git a/storage/synology/snmp/plugin.pm b/storage/synology/snmp/plugin.pm
index 778caf575..d8cf71d86 100644
--- a/storage/synology/snmp/plugin.pm
+++ b/storage/synology/snmp/plugin.pm
@@ -41,6 +41,7 @@ sub new {
         'swap'        => 'snmp_standard::mode::swap',
         'temperature' => 'storage::synology::snmp::mode::temperature',
         'time'        => 'snmp_standard::mode::ntp',
+        'upgrade'     => 'storage::synology::snmp::mode::upgrade',
         'ups'         => 'storage::synology::snmp::mode::ups',
         'uptime'      => 'snmp_standard::mode::uptime'
     };