diff --git a/libs/ardour/luabindings.cc b/libs/ardour/luabindings.cc
index c7d6ee75a3..533395f5bb 100644
--- a/libs/ardour/luabindings.cc
+++ b/libs/ardour/luabindings.cc
@@ -305,6 +305,8 @@ LuaBindings::common (lua_State* L)
 		.addFunction ("write", &PBD::RingBufferNPT<uint8_t>::write)
 		.addFunction ("write_space", &PBD::RingBufferNPT<uint8_t>::write_space)
 		.addFunction ("read_space", &PBD::RingBufferNPT<uint8_t>::read_space)
+		.addFunction ("increment_read_ptr", &PBD::RingBufferNPT<uint8_t>::increment_read_ptr)
+		.addFunction ("increment_write_ptr", &PBD::RingBufferNPT<uint8_t>::increment_write_ptr)
 		.endClass ()
 
 		.beginClass <PBD::RingBufferNPT <float> > ("RingBufferF")
@@ -314,6 +316,8 @@ LuaBindings::common (lua_State* L)
 		.addFunction ("write", &PBD::RingBufferNPT<float>::write)
 		.addFunction ("write_space", &PBD::RingBufferNPT<float>::write_space)
 		.addFunction ("read_space", &PBD::RingBufferNPT<float>::read_space)
+		.addFunction ("increment_read_ptr", &PBD::RingBufferNPT<float>::increment_read_ptr)
+		.addFunction ("increment_write_ptr", &PBD::RingBufferNPT<float>::increment_write_ptr)
 		.endClass ()
 
 		.beginClass <PBD::RingBufferNPT <int> > ("RingBufferI")
@@ -323,6 +327,8 @@ LuaBindings::common (lua_State* L)
 		.addFunction ("write", &PBD::RingBufferNPT<int>::write)
 		.addFunction ("write_space", &PBD::RingBufferNPT<int>::write_space)
 		.addFunction ("read_space", &PBD::RingBufferNPT<int>::read_space)
+		.addFunction ("increment_read_ptr", &PBD::RingBufferNPT<int>::increment_read_ptr)
+		.addFunction ("increment_write_ptr", &PBD::RingBufferNPT<int>::increment_write_ptr)
 		.endClass ()
 
 		/* PBD enums */