--- a/src/lib-lua/dlua-script.c
+++ b/src/lib-lua/dlua-script.c
@@ -253,7 +253,11 @@ static struct dlua_script *dlua_create_s
 	/* lua API says that lua_newstate will return NULL only if it's out of
 	   memory. this cannot really happen with our allocator as it will
 	   call i_fatal_status anyways if it runs out of memory */
+#if LUA_VERSION_NUM >= 505
+	script->L = lua_newstate(dlua_alloc, script, luaL_makeseed(NULL));
+#else
 	script->L = lua_newstate(dlua_alloc, script);
+#endif
 	i_assert(script->L != NULL);
 	script->ref = 1;
 	lua_atpanic(script->L, dlua_atpanic);