diff --git a/src/container.h b/src/container.h
index bea08bbfb5..ada43a048b 100644
--- a/src/container.h
+++ b/src/container.h
@@ -56,6 +56,7 @@ class Container : public Item, public Cylinder
 	size_t size() const { return itemlist.size(); }
 	bool empty() const { return itemlist.empty(); }
 	uint32_t capacity() const { return maxSize; }
+	void setCapacity(uint32_t capacity) { maxSize = capacity; }
 	uint32_t getAmmoCount() const { return ammoCount; }
 
 	ContainerIterator iterator() const;
diff --git a/src/luascript.cpp b/src/luascript.cpp
index 8214157dc2..871cc169f7 100644
--- a/src/luascript.cpp
+++ b/src/luascript.cpp
@@ -2506,6 +2506,7 @@ void LuaScriptInterface::registerFunctions()
 
 	registerMethod("Container", "getSize", LuaScriptInterface::luaContainerGetSize);
 	registerMethod("Container", "getCapacity", LuaScriptInterface::luaContainerGetCapacity);
+	registerMethod("Container", "setCapacity", LuaScriptInterface::luaContainerSetCapacity);
 	registerMethod("Container", "getEmptySlots", LuaScriptInterface::luaContainerGetEmptySlots);
 	registerMethod("Container", "getItems", LuaScriptInterface::luaContainerGetItems);
 	registerMethod("Container", "getItemHoldingCount", LuaScriptInterface::luaContainerGetItemHoldingCount);
@@ -7378,6 +7379,20 @@ int LuaScriptInterface::luaContainerGetCapacity(lua_State* L)
 	return 1;
 }
 
+int LuaScriptInterface::luaContainerSetCapacity(lua_State* L)
+{
+	// container:setCapacity(capacity)
+	Container* container = getUserdata<Container>(L, 1);
+	if (container) {
+		uint32_t capacity = getNumber<uint32_t>(L, 2);
+		container->setCapacity(capacity);
+		pushBoolean(L, true);
+	} else {
+		lua_pushnil(L);
+	}
+	return 1;
+}
+
 int LuaScriptInterface::luaContainerGetEmptySlots(lua_State* L)
 {
 	// container:getEmptySlots([recursive = false])
diff --git a/src/luascript.h b/src/luascript.h
index 5b783a0727..ec0e42b456 100644
--- a/src/luascript.h
+++ b/src/luascript.h
@@ -738,6 +738,7 @@ class LuaScriptInterface
 
 	static int luaContainerGetSize(lua_State* L);
 	static int luaContainerGetCapacity(lua_State* L);
+	static int luaContainerSetCapacity(lua_State* L);
 	static int luaContainerGetEmptySlots(lua_State* L);
 	static int luaContainerGetItems(lua_State* L);
 	static int luaContainerGetItemHoldingCount(lua_State* L);