diff --git a/configure b/configure
index e3ee1bfd6..7a68a4081 100755
--- a/configure
+++ b/configure
@@ -2878,9 +2878,9 @@ ac_config_headers="$ac_config_headers include/ignored_config.h include/config.h
 
 PKG_NAME=nagios
 
-PKG_VERSION="4.5.8"
+PKG_VERSION="4.5.9"
 PKG_HOME_URL="https://www.nagios.org/"
-PKG_REL_DATE="2024-11-19"
+PKG_REL_DATE="2024-12-19"
 
 
 
diff --git a/configure.ac b/configure.ac
index 1ca03b29a..b4d3c73d2 100644
--- a/configure.ac
+++ b/configure.ac
@@ -12,9 +12,9 @@ AC_PREFIX_DEFAULT(/usr/local/nagios)
 
 PKG_NAME=nagios
 
-PKG_VERSION="4.5.8"
+PKG_VERSION="4.5.9"
 PKG_HOME_URL="https://www.nagios.org/"
-PKG_REL_DATE="2024-11-19"
+PKG_REL_DATE="2024-12-19"
 
 dnl Figure out how to invoke "install" and what install options to use.
 AC_PROG_INSTALL
diff --git a/contrib/epel-nagios.spec b/contrib/epel-nagios.spec
index 92be866ac..6f692c9a7 100644
--- a/contrib/epel-nagios.spec
+++ b/contrib/epel-nagios.spec
@@ -3,7 +3,7 @@
 %global bootstrap 0
 
 Name:           nagios
-Version: 4.5.8
+Version: 4.5.9
 Release:        4%{?dist}
 
 Summary: Host/service/network monitoring program
diff --git a/doxy.conf b/doxy.conf
index f3c0f181e..e59175bc7 100644
--- a/doxy.conf
+++ b/doxy.conf
@@ -1,5 +1,5 @@
 PROJECT_NAME = Nagios
-PROJECT_NUMBER = 4.5.8
+PROJECT_NUMBER = 4.5.9
 PROJECT_BRIEF = "Dev docs for Nagios core and neb-module hackers"
 
 INPUT            = lib/ docs/
diff --git a/html/main.php b/html/main.php
index 53327b2a4..15713f8d8 100644
--- a/html/main.php
+++ b/html/main.php
@@ -1,7 +1,7 @@
 <?php
 include_once(dirname(__FILE__).'/includes/utils.inc.php');
 
-$this_version = '4.5.8';
+$this_version = '4.5.9';
 $this_year = '2024';
 $theme = $cfg['theme'] ?? 'dark';
 if ($theme != 'dark' && $theme != 'light') {
@@ -72,7 +72,7 @@ function setCoreStatusHTML(image, text) {
 <div id="currentversioninfo">
 	<div>
 		<div class="version">Version <b><?php echo $this_version; ?></b></div>
-		<div class="releasedate">November 19, 2024</div>
+		<div class="releasedate">December 19, 2024</div>
 	</div>
 	<div><span id="core-status"></span></div>
 	<a class="checkforupdates" href="https://www.nagios.org/checkforupdates/?version=<?php echo $this_version; ?>&amp;product=nagioscore" target="_blank">Check for updates</a>
diff --git a/html/side.php b/html/side.php
index de82ca616..52f4bea6a 100644
--- a/html/side.php
+++ b/html/side.php
@@ -1,7 +1,7 @@
 <?php
 include_once(dirname(__FILE__).'/includes/utils.inc.php');
 
-$this_version = '4.5.8';
+$this_version = '4.5.9';
 $link_target = 'main';
 $theme = $cfg['theme'] ?? 'dark';
 if ($theme != 'dark' && $theme != 'light') {
diff --git a/include/common.h b/include/common.h
index e37d76748..b90b9f2de 100644
--- a/include/common.h
+++ b/include/common.h
@@ -24,8 +24,8 @@
 
 #include "shared.h"
 
-#define PROGRAM_VERSION "4.5.8"
-#define PROGRAM_MODIFICATION_DATE "2024-11-19"
+#define PROGRAM_VERSION "4.5.9"
+#define PROGRAM_MODIFICATION_DATE "2024-12-19"
 
 NAGIOS_BEGIN_DECL
 
diff --git a/nagios.spec b/nagios.spec
index 220ad0980..9edb9e273 100644
--- a/nagios.spec
+++ b/nagios.spec
@@ -29,7 +29,7 @@
 
 Summary: Open Source host, service and network monitoring program
 Name: nagios
-Version: 4.5.8
+Version: 4.5.9
 Release: 2%{?dist}
 License: GPL
 Group: Applications/System
diff --git a/startup/default-service.in b/startup/default-service.in
index 17b6cd127..2d875ad8c 100644
--- a/startup/default-service.in
+++ b/startup/default-service.in
@@ -1,5 +1,5 @@
 [Unit]
-Description=Nagios Core 4.5.8
+Description=Nagios Core 4.5.9
 Documentation=https://www.nagios.org/documentation
 After=network.target local-fs.target
 
diff --git a/update-version b/update-version
index e972020f7..85c3e21bd 100755
--- a/update-version
+++ b/update-version
@@ -12,10 +12,10 @@ else
 fi
 
 # Current version number
-CURRENTVERSION=4.5.8
+CURRENTVERSION=4.5.9
 
 # Last date
-LASTDATE=2024-11-19
+LASTDATE=2024-12-19
 
 if [ "x$1" = "x" ]
 then