diff --git a/README b/README
index 073bfd2..fd0a273 100644
--- a/README
+++ b/README
@@ -114,7 +114,7 @@ CONTRIBUTING
     welcome.
 
 VERSION
-    check_pgbackrest version 1.5, released on Mon Mar 18 2019.
+    check_pgbackrest version 1.6, released on Thu Nov 14 2019.
 
 LICENSING
     This program is open source, licensed under the PostgreSQL license. For
diff --git a/README.pod b/README.pod
index c9de011..5744c51 100644
--- a/README.pod
+++ b/README.pod
@@ -138,7 +138,7 @@ check_pgbackrest is an open project. Any contribution to improve it is welcome.
 
 =head1 VERSION
 
-check_pgbackrest version 1.5, released on Mon Mar 18 2019.
+check_pgbackrest version 1.6, released on Thu Nov 14 2019.
 
 =head1 LICENSING
 
diff --git a/check_pgbackrest b/check_pgbackrest
index 8de5245..13a4961 100755
--- a/check_pgbackrest
+++ b/check_pgbackrest
@@ -60,7 +60,7 @@ undef @path;
 # Reference to the output sub
 my $output_fmt;
 
-$VERSION = '1.6dev';
+$VERSION = '1.6';
 $PROGRAM = 'check_pgbackrest';
 
 # Available services and descriptions.
@@ -885,7 +885,7 @@ sub check_wal_archives {
         # Generate @warn_msg and @crit_msg with missing files (sorted and unique messages)
         my @unique_warn_missing_file_msg = do { my %seen; grep { !$seen{$_}++ } @warn_missing_file_msg };
         push @warn_msg, sort @unique_warn_missing_file_msg;
-        
+
         push @crit_missing_file_msg, @warn_missing_file_msg if @warn_missing_file_msg and @crit_missing_file_msg;
         my @unique_crit_missing_file_msg = do { my %seen; grep { !$seen{$_}++ } @crit_missing_file_msg };
         push @crit_msg, sort @unique_crit_missing_file_msg;
@@ -1040,7 +1040,7 @@ check_pgbackrest is an open project. Any contribution to improve it is welcome.
 
 =head1 VERSION
 
-check_pgbackrest version 1.5, released on Mon Mar 18 2019.
+check_pgbackrest version 1.6, released on Thu Nov 14 2019.
 
 =head1 LICENSING
 
diff --git a/check_pgbackrest.spec b/check_pgbackrest.spec
index 0381f81..c4ca76b 100644
--- a/check_pgbackrest.spec
+++ b/check_pgbackrest.spec
@@ -1,7 +1,7 @@
-%global _tag REL1_5
+%global _tag REL1_6
 
 Name: nagios-plugins-pgbackrest
-Version: 1.5
+Version: 1.6
 Release: 1
 Summary: pgBackRest backup check plugin for Nagios 
 License: PostgreSQL
@@ -32,5 +32,7 @@ install -D -p -m 0755 check_pgbackrest %{buildroot}/%{_libdir}/nagios/plugins/ch
 %doc README LICENSE
 
 %changelog
+* Thu Nov 14 2019 Stefan Fercot <stefan.fercot@dalibo.com> 1.6-1
+- new major release 1.6
 * Mon Mar 18 2019 Stefan Fercot <stefan.fercot@dalibo.com> 1.5-1
 - new major release 1.5
diff --git a/test/regress/expected/version.out b/test/regress/expected/version.out
index 7b2d113..8bb7022 100644
--- a/test/regress/expected/version.out
+++ b/test/regress/expected/version.out
@@ -1 +1 @@
-check_pgbackrest version 1.6dev, Perl 5.16.3
+check_pgbackrest version 1.6, Perl 5.16.3