diff --git a/mods/lzr_hook/init.lua b/mods/lzr_hook/init.lua
index 86c3c8eb..2ebce4e5 100644
--- a/mods/lzr_hook/init.lua
+++ b/mods/lzr_hook/init.lua
@@ -358,6 +358,11 @@ minetest.register_tool("lzr_hook:hook",{
 	_tt_help = S("Punch to push edge, place to rotate face").."\n"..
 		S("Sneak to reverse rotation direction"),
 	inventory_image = "lzr_hook_hook.png",
+	-- Ensure infinite durability if used as digging tool by automation
+	tool_capabilities = {
+		full_punch_interval = 0,
+		punch_attack_uses = 0,
+	},
 	on_use = function(itemstack, player, pointed_thing)
 		return lzr_hook.use(itemstack, player, pointed_thing, false)
 	end,