diff --git a/Dockerfile.linux-amd64 b/Dockerfile.linux-amd64
index 86204f3..0d0227a 100644
--- a/Dockerfile.linux-amd64
+++ b/Dockerfile.linux-amd64
@@ -5,7 +5,7 @@ ARG BUILDKIT_SBOM_SCAN_STAGE=true
 FROM ubuntu:22.04
 
 LABEL name="Nagios" \
-    nagiosVersion="4.5.0" \
+    nagiosVersion="4.5.1" \
     nagiosPluginsVersion="2.4.9" \
     nrpeVersion="4.1.0" \
     nscaVersion="2.10.2" \
@@ -29,7 +29,7 @@ ENV NAGIOS_HOME=/opt/nagios \
     APACHE_LOG_DIR=/var/log/apache2 \
     NAGIOS_TIMEZONE=UTC \
     DEBIAN_FRONTEND=noninteractive \
-    NAGIOS_BRANCH=nagios-4.5.0 \
+    NAGIOS_BRANCH=nagios-4.5.1 \
     NAGIOS_PLUGINS_BRANCH=release-2.4.9 \
     NRPE_BRANCH=nrpe-4.1.0 \
     NSCA_TAG=nsca-2.10.2 \
diff --git a/Dockerfile.linux-arm-v7 b/Dockerfile.linux-arm-v7
index f6a7eb1..6340ef8 100644
--- a/Dockerfile.linux-arm-v7
+++ b/Dockerfile.linux-arm-v7
@@ -5,7 +5,7 @@ ARG BUILDKIT_SBOM_SCAN_STAGE=true
 FROM ubuntu:22.04
 
 LABEL name="Nagios" \
-    nagiosVersion="4.5.0" \
+    nagiosVersion="4.5.1" \
     nagiosPluginsVersion="2.4.9" \
     nrpeVersion="4.1.0" \
     nscaVersion="2.10.2" \
@@ -29,7 +29,7 @@ ENV NAGIOS_HOME=/opt/nagios \
     APACHE_LOG_DIR=/var/log/apache2 \
     NAGIOS_TIMEZONE=UTC \
     DEBIAN_FRONTEND=noninteractive \
-    NAGIOS_BRANCH=nagios-4.5.0 \
+    NAGIOS_BRANCH=nagios-4.5.1 \
     NAGIOS_PLUGINS_BRANCH=release-2.4.9 \
     NRPE_BRANCH=nrpe-4.1.0 \
     NSCA_TAG=nsca-2.10.2 \
diff --git a/Dockerfile.linux-arm64 b/Dockerfile.linux-arm64
index 3c3cce7..ea7606b 100644
--- a/Dockerfile.linux-arm64
+++ b/Dockerfile.linux-arm64
@@ -5,7 +5,7 @@ ARG BUILDKIT_SBOM_SCAN_STAGE=true
 FROM ubuntu:22.04
 
 LABEL name="Nagios" \
-    nagiosVersion="4.5.0" \
+    nagiosVersion="4.5.1" \
     nagiosPluginsVersion="2.4.9" \
     nrpeVersion="4.1.0" \
     nscaVersion="2.10.2" \
@@ -29,7 +29,7 @@ ENV NAGIOS_HOME=/opt/nagios \
     APACHE_LOG_DIR=/var/log/apache2 \
     NAGIOS_TIMEZONE=UTC \
     DEBIAN_FRONTEND=noninteractive \
-    NAGIOS_BRANCH=nagios-4.5.0 \
+    NAGIOS_BRANCH=nagios-4.5.1 \
     NAGIOS_PLUGINS_BRANCH=release-2.4.9 \
     NRPE_BRANCH=nrpe-4.1.0 \
     NSCA_TAG=nsca-2.10.2 \
diff --git a/README.md b/README.md
index 2dc6f93..3baa847 100644
--- a/README.md
+++ b/README.md
@@ -36,7 +36,7 @@ Nagios Core running on Ubuntu 22.04 LTS with NagiosGraph, NRPE, NCPA, NSCA, Chec
 
 | Product | Version |
 | ------- | ------- |
-| [Nagios Core](https://github.com/NagiosEnterprises/nagioscore/releases) | 4.5.0 |
+| [Nagios Core](https://github.com/NagiosEnterprises/nagioscore/releases) | 4.5.1 |
 | [Nagios Plugins](https://github.com/nagios-plugins/nagios-plugins) | 2.4.9 |
 | [NRPE](https://github.com/NagiosEnterprises/nrpe) | 4.1.0 |
 | [NCPA](https://github.com/NagiosEnterprises/ncpa) | 3.0.1 |