1 files changed, 1 insertions, 0 deletions

diff --git a/src/lua.h b/src/lua.h
index c83fd3bb..352d29f3 100644
--- a/src/lua.h
+++ b/src/lua.h
@@ -226,6 +226,7 @@ LUA_API int  (lua_status) (lua_State *L);
 #define LUA_GCSTEP              5
 #define LUA_GCSETPAUSE          6
 #define LUA_GCSETSTEPMUL        7
+#define LUA_GCISRUNNING         9
 
 LUA_API int (lua_gc) (lua_State *L, int what, int data);