diff --git a/pages/getting-started/5-security.mdx b/pages/getting-started/5-security.mdx
index c7716db..52c99ee 100644
--- a/pages/getting-started/5-security.mdx
+++ b/pages/getting-started/5-security.mdx
@@ -108,6 +108,7 @@ end
 local function constructProtectedMt<T>(library: T)
 	return {
 		__index = library,
+		__metatable = "Locked",
 		__tostring = function()
 			return stdio.format(library)
 		end,