diff --git a/lib/lua/src/luabitwise.c b/lib/lua/src/luabitwise.c
index 2e07e17..ea9110a 100644
--- a/lib/lua/src/luabitwise.c
+++ b/lib/lua/src/luabitwise.c
@@ -27,6 +27,13 @@
   return 1;
 }
 
+static int l_unot(lua_State *L) {
+  unsigned int a = luaL_checkinteger(L, 1);
+  a = ~a;
+  lua_pushnumber(L, a);
+  return 1;
+}
+
 static int l_xor(lua_State *L) {
   int a = luaL_checkinteger(L, 1);
   int b = luaL_checkinteger(L, 2);
@@ -35,6 +42,15 @@
   return 1;
 }
 
+static int l_uxor(lua_State *L) {
+  unsigned int a = luaL_checkinteger(L, 1);
+  unsigned int b = luaL_checkinteger(L, 2);
+  a ^= b;
+  lua_pushnumber(L, a);
+  return 1;
+}
+
+
 static int l_and(lua_State *L) {
   int a = luaL_checkinteger(L, 1);
   int b = luaL_checkinteger(L, 2);
@@ -43,6 +59,14 @@
   return 1;
 }
 
+static int l_uand(lua_State *L) {
+  unsigned int a = luaL_checkinteger(L, 1);
+  unsigned int b = luaL_checkinteger(L, 2);
+  a &= b;
+  lua_pushnumber(L, a);
+  return 1;
+}
+
 static int l_or(lua_State *L) {
   int a = luaL_checkinteger(L, 1);
   int b = luaL_checkinteger(L, 2);
@@ -51,6 +75,14 @@
   return 1;
 }
 
+static int l_uor(lua_State *L) {
+  unsigned int a = luaL_checkinteger(L, 1);
+  unsigned int b = luaL_checkinteger(L, 2);
+  a |= b;
+  lua_pushnumber(L, a);
+  return 1;
+}
+
 static int l_shiftr(lua_State *L) {
   int a = luaL_checkinteger(L, 1);
   int b = luaL_checkinteger(L, 2);
@@ -59,6 +91,14 @@
   return 1;
 }
 
+static int l_ushiftr(lua_State *L) {
+  unsigned int a = luaL_checkinteger(L, 1);
+  unsigned int b = luaL_checkinteger(L, 2);
+  a = a >> b;
+  lua_pushnumber(L, a);
+  return 1;
+}
+
 static int l_shiftl(lua_State *L) {
   int a = luaL_checkinteger(L, 1);
   int b = luaL_checkinteger(L, 2);
@@ -67,17 +107,36 @@
   return 1;
 }
 
+static int l_ushiftl(lua_State *L) {
+  unsigned int a = luaL_checkinteger(L, 1);
+  unsigned int b = luaL_checkinteger(L, 2);
+  a = a << b;
+  lua_pushnumber(L, a);
+  return 1;
+}
+
 static const struct luaL_Reg funcs[] = {
   {"band", l_and},
+  {"buand", l_uand},
   {"bor", l_or},
+  {"buor", l_uor},
   {"bxor", l_xor},
+  {"buxor", l_uxor},
   {"bnot", l_not},
+  {"bunot", l_unot},
   {"shiftl", l_shiftl},
+  {"ushiftl", l_ushiftl},
   {"shiftr", l_shiftr},
+  {"ushiftr", l_ushiftr},
   {NULL, NULL}
 };
 
 int luaopen_libluabitwise(lua_State *L) {
+#if LUA_VERSION_NUM >= 502
+    lua_newtable(L);
+    luaL_setfuncs(L, funcs, 0);
+#else
   luaL_register(L, "libluabitwise", funcs);
+#endif
   return 1;
 }