diff --git a/Makefile b/Makefile
index da24367..c7fd05b 100644
--- a/Makefile
+++ b/Makefile
@@ -35,5 +35,12 @@ submodules-update:
 submodules-push:
 	git submodule foreach git push
 
+submodules-tag:
+	git submodule foreach git tag -f "$$(date +%F)-$$(hostname -s)"
+
+tag: submodules-tag
+	git tag -f "$$(date +%F)-$$(hostname -s)"
+
 upgrade:
 	nixos-rebuild switch --upgrade
+