diff --git a/spcd/bootstrap.sh b/spcd/bootstrap.sh
index 66d2386..4a07cbc 100644
--- a/spcd/bootstrap.sh
+++ b/spcd/bootstrap.sh
@@ -796,6 +796,15 @@ spcd_f_pkg() {
 	"${SPCD_OS_ALMA}" | "${SPCD_OS_ROCKY}") ;;
 	*) spcd_f_pm_pkg_install "gource" ;;
 	esac
+	# gpg
+	spcd_step "GnuPG"
+	case "${SPCD_OS_ID}" in
+	"${SPCD_OS_DEBIAN}")
+		spcd_f_pm_pkg_install "gpg"
+		;;
+	# TODO other operating systems
+	*) ;;
+	esac
 	# graphviz
 	spcd_step "GraphViz"
 	spcd_f_pm_pkg_install "graphviz"