diff --git a/spcd.sh b/spcd.sh
index f10a213..872f7ed 100644
--- a/spcd.sh
+++ b/spcd.sh
@@ -599,19 +599,25 @@ spcd_install_python() {
 
 # TODO move to Python
 spcd_install_packages() {
-	#
+	# graphviz
 	spcd_step "Install GraphViz"
 	spcd_install_package "graphviz"
-	#
+	# plantuml
 	spcd_step "Install PlantUML"
 	case "${SPCD_OS_ID}" in
 	"${SPCD_OS_ALMA}" | "${SPCD_OS_ROCKY}") ;;
 	*) spcd_install_package "plantuml" ;;
 	esac
-	#
+	# rsync
 	spcd_step "Install Rsync"
 	spcd_install_package "rsync"
-	#
+	# shellcheck
+	spcd_step "Install ShellCheck"
+	case "${SPCD_OS_ID}" in
+	"${SPCD_OS_ALMA}" | "${SPCD_OS_ROCKY}") ;;
+	*) spcd_install_package "shellcheck" ;;
+	esac
+	# ssh
 	spcd_step "Install SSH"
 	case "${SPCD_PM}" in
 	"${SPCD_PM_APK}" | "${SPCD_PM_APT}") spcd_install_package "openssh-client" ;;