diff --git a/ct/checkmk.sh b/ct/checkmk.sh
index 7d134b20c..6b9ddd439 100644
--- a/ct/checkmk.sh
+++ b/ct/checkmk.sh
@@ -27,7 +27,7 @@ function update_script() {
     msg_error "No ${APP} Installation Found!"
     exit
   fi
-  RELEASE=$(curl -fsSL https://api.github.com/repos/checkmk/checkmk/tags | grep "name" | awk '{print substr($2, 3, length($2)-4) }' | tr ' ' '\n' | grep -v '\-rc' | sort -V | tail -n 1)
+  RELEASE=$(curl -fsSL https://api.github.com/repos/checkmk/checkmk/tags | grep "name" | awk '{print substr($2, 3, length($2)-4) }' | tr ' ' '\n' | grep -Ev 'rc|b' | sort -V | tail -n 1)
   if [[ ! -f /opt/${APP}_version.txt ]] || [[ "${RELEASE}" != "$(cat /opt/${APP}_version.txt)" ]]; then
     msg_info "Updating ${APP} to v${RELEASE}"
     $STD omd stop monitoring
diff --git a/install/checkmk-install.sh b/install/checkmk-install.sh
index 56af8c8da..6cc9c8408 100644
--- a/install/checkmk-install.sh
+++ b/install/checkmk-install.sh
@@ -14,7 +14,7 @@ network_check
 update_os
 
 msg_info "Install Checkmk"
-RELEASE=$(curl -fsSL https://api.github.com/repos/checkmk/checkmk/tags | grep "name" | awk '{print substr($2, 3, length($2)-4) }' | tr ' ' '\n' | grep -v '\-rc' | sort -V | tail -n 1)
+RELEASE=$(curl -fsSL https://api.github.com/repos/checkmk/checkmk/tags | grep "name" | awk '{print substr($2, 3, length($2)-4) }' | tr ' ' '\n' | grep -Ev 'rc|b' | sort -V | tail -n 1)
 curl -fsSL "https://download.checkmk.com/checkmk/${RELEASE}/check-mk-raw-${RELEASE}_0.bookworm_amd64.deb" -o "/opt/checkmk.deb"
 $STD apt-get install -y /opt/checkmk.deb
 echo "${RELEASE}" >"/opt/checkmk_version.txt"