diff --git a/ct/checkmk.sh b/ct/checkmk.sh
index 4a08f504..e76a69d8 100644
--- a/ct/checkmk.sh
+++ b/ct/checkmk.sh
@@ -35,7 +35,7 @@ function update_script() {
     omd stop monitoring &>/dev/null
     omd cp monitoring monitoringbackup &>/dev/null
     wget -q https://download.checkmk.com/checkmk/${RELEASE}/check-mk-raw-${RELEASE}_0.bookworm_amd64.deb -O /opt/checkmk.deb
-    apt-get install -y /opt/checkmk.deb &>/dev/null
+    dpkg -i /opt/checkmk.deb &>/dev/null
     omd --force -V ${RELEASE}.cre update --conflict=install monitoring &>/dev/null
     omd start monitoring &>/dev/null
     omd -f rm monitoringbackup  &>/dev/null
diff --git a/install/checkmk-install.sh b/install/checkmk-install.sh
index ae2d0c42..9c44d841 100644
--- a/install/checkmk-install.sh
+++ b/install/checkmk-install.sh
@@ -24,7 +24,7 @@ msg_ok "Installed Dependencies"
 msg_info "Install Checkmk"
 RELEASE=$(curl -fsSL https://api.github.com/repos/checkmk/checkmk/tags | grep "name" | awk '{print substr($2, 3, length($2)-4) }' | grep -v "*-rc" | tail -n +2 | head -n 1)
 wget -q https://download.checkmk.com/checkmk/${RELEASE}/check-mk-raw-${RELEASE}_0.bookworm_amd64.deb -O /opt/checkmk.deb
-$STD apt-get install -y /opt/checkmk.deb
+$STD dpkg -i /opt/checkmk.deb
 echo "${RELEASE}" >"/opt/checkmk_version.txt"
 msg_ok "Installed Checkmk"