diff --git a/.check_date.sh b/.check_date.sh
index 7310fde..831a6dd 100755
--- a/.check_date.sh
+++ b/.check_date.sh
@@ -1,3 +1,3 @@
 #!/usr/bin/env bash
-grep $(date -I) mod.conf
+grep $(date -u -I) mod.conf
 exit $?
diff --git a/mod.conf b/mod.conf
index 7f36e8e..ec55ebe 100644
--- a/mod.conf
+++ b/mod.conf
@@ -5,7 +5,7 @@ website = https://content.minetest.net/packages/rheo/smartshop/
 author = fluxionary
 license = LGPL-3.0-or-later
 media_license = CC-BY-SA-3.0
-version = 2024-01-12
+version = 2024-02-08
 min_minetest_version = 5.8.0
 supported_games = *
 depends = fmod, futil
diff --git a/tests/init.lua b/tests/init.lua
index 37c152b..0505fc5 100644
--- a/tests/init.lua
+++ b/tests/init.lua
@@ -75,3 +75,4 @@ smartshop.dofile("tests", "currency")
 smartshop.dofile("tests", "shop_full")
 smartshop.dofile("tests", "strict_meta")
 smartshop.dofile("tests", "admin_shop")
+smartshop.dofile("tests", "split_payment_stack")
diff --git a/tests/split_payment_stack.lua b/tests/split_payment_stack.lua
new file mode 100644
index 0000000..cd00ade
--- /dev/null
+++ b/tests/split_payment_stack.lua
@@ -0,0 +1,131 @@
+local inv_count = smartshop.tests.inv_count
+
+smartshop.tests.register_test({
+	name = "split payment purchase",
+	func = function(player, state)
+		minetest.set_player_privs(player:get_player_name(), {
+			interact = true,
+			server = true,
+			[smartshop.settings.admin_shop_priv] = true,
+		})
+
+		local under = state.place_shop_against
+		local shop_at = vector.subtract(state.place_shop_against, vector.new(0, 0, 1))
+
+		minetest.remove_node(shop_at)
+		minetest.item_place_node(ItemStack("smartshop:shop"), player, { type = "node", under = under, above = shop_at })
+
+		local shop = smartshop.api.get_object(shop_at)
+
+		shop.inv:set_stack("pay3", 1, "smartshop:currency_1 2")
+		shop.inv:set_stack("give3", 1, "smartshop:gold 99")
+		shop:update_appearance()
+
+		local player_inv = player:get_inventory()
+		player_inv:set_list("main", {
+			"smartshop:currency_1 97",
+			"smartshop:currency_1 2",
+			"smartshop:gold",
+			"smartshop:tool",
+			"smartshop:tool",
+			"smartshop:tool",
+			"smartshop:tool",
+			"smartshop:tool",
+			"smartshop:tool",
+			"smartshop:tool",
+			"smartshop:tool",
+			"smartshop:tool",
+			"smartshop:tool",
+			"smartshop:tool",
+			"smartshop:tool",
+			"smartshop:tool",
+			"smartshop:tool",
+			"smartshop:tool",
+			"smartshop:tool",
+			"smartshop:tool",
+			"smartshop:tool",
+			"smartshop:tool",
+			"smartshop:tool",
+			"smartshop:tool",
+			"smartshop:tool",
+			"smartshop:tool",
+			"smartshop:tool",
+			"smartshop:tool",
+			"smartshop:tool",
+			"smartshop:tool",
+			"smartshop:tool",
+			"smartshop:tool",
+		})
+
+		shop:receive_fields(player, { buy3a = true })
+
+		assert(inv_count(player_inv, "main", "smartshop:gold") == 100, "correct amount was received")
+		assert(inv_count(player_inv, "main", "smartshop:currency_1") == 97, "correct amount was spent")
+		assert(inv_count(player_inv, "main", "smartshop:tool") == 29, "tools not replaced")
+	end,
+})
+
+smartshop.tests.register_test({
+	name = "split payment purchase failure",
+	func = function(player, state)
+		minetest.set_player_privs(player:get_player_name(), {
+			interact = true,
+			server = true,
+			[smartshop.settings.admin_shop_priv] = true,
+		})
+
+		local under = state.place_shop_against
+		local shop_at = vector.subtract(state.place_shop_against, vector.new(0, 0, 1))
+
+		minetest.remove_node(shop_at)
+		minetest.item_place_node(ItemStack("smartshop:shop"), player, { type = "node", under = under, above = shop_at })
+
+		local shop = smartshop.api.get_object(shop_at)
+
+		shop.inv:set_stack("pay3", 1, "smartshop:currency_1 2")
+		shop.inv:set_stack("give3", 1, "smartshop:gold 99")
+		shop:update_appearance()
+
+		local player_inv = player:get_inventory()
+		player_inv:set_list("main", {
+			"smartshop:currency_1 2",
+			"smartshop:currency_1 97",
+			"smartshop:gold",
+			"smartshop:tool",
+			"smartshop:tool",
+			"smartshop:tool",
+			"smartshop:tool",
+			"smartshop:tool",
+			"smartshop:tool",
+			"smartshop:tool",
+			"smartshop:tool",
+			"smartshop:tool",
+			"smartshop:tool",
+			"smartshop:tool",
+			"smartshop:tool",
+			"smartshop:tool",
+			"smartshop:tool",
+			"smartshop:tool",
+			"smartshop:tool",
+			"smartshop:tool",
+			"smartshop:tool",
+			"smartshop:tool",
+			"smartshop:tool",
+			"smartshop:tool",
+			"smartshop:tool",
+			"smartshop:tool",
+			"smartshop:tool",
+			"smartshop:tool",
+			"smartshop:tool",
+			"smartshop:tool",
+			"smartshop:tool",
+			"smartshop:tool",
+		})
+
+		shop:receive_fields(player, { buy3a = true })
+
+		assert(inv_count(player_inv, "main", "smartshop:gold") == 1, "correct amount was received")
+		assert(inv_count(player_inv, "main", "smartshop:currency_1") == 99, "correct amount was spent")
+		assert(inv_count(player_inv, "main", "smartshop:tool") == 29, "tools not replaced")
+	end,
+})