diff -up luaposix-release-v34.1.1/ext/include/_helpers.c.54 luaposix-release-v34.1.1/ext/include/_helpers.c
--- luaposix-release-v34.1.1/ext/include/_helpers.c.54	2019-07-28 19:52:15.000000000 -0600
+++ luaposix-release-v34.1.1/ext/include/_helpers.c	2020-07-03 15:52:36.736850636 -0600
@@ -67,7 +67,7 @@
 #  endif
 #endif
 
-#if LUA_VERSION_NUM == 502 || LUA_VERSION_NUM == 503
+#if LUA_VERSION_NUM == 502 || LUA_VERSION_NUM == 503 || LUA_VERSION_NUM == 504
 #  define lua_objlen lua_rawlen
 #  define lua_strlen lua_rawlen
 #endif
diff -up luaposix-release-v34.1.1/lib/posix/init.lua.54 luaposix-release-v34.1.1/lib/posix/init.lua
--- luaposix-release-v34.1.1/lib/posix/init.lua.54	2020-07-03 15:52:36.731850626 -0600
+++ luaposix-release-v34.1.1/lib/posix/init.lua	2020-07-03 16:27:29.414853510 -0600
@@ -327,10 +327,12 @@ do
    end
 
    -- Inject deprecated APIs (overwriting submodules) for backwards compatibility.
-   for k, v in next, require 'posix.deprecated' do
+   local funcs = require 'posix.deprecated'
+   for k, v in next, funcs do
       M[k] = v
    end
-   for k, v in next, require 'posix.compat' do
+   funcs = require 'posix.compat'
+   for k, v in next, funcs do
       M[k] = v
    end
 end