diff --git a/mrbgems/mruby-time/include/mruby/time.h b/mrbgems/mruby-time/include/mruby/time.h
index 9149e0af2..349fc4d04 100644
--- a/mrbgems/mruby-time/include/mruby/time.h
+++ b/mrbgems/mruby-time/include/mruby/time.h
@@ -20,6 +20,7 @@ typedef enum mrb_timezone {
 } mrb_timezone;
 
 MRB_API mrb_value mrb_time_at(mrb_state *mrb, time_t sec, time_t usec, mrb_timezone timezone);
+MRB_API struct tm* mrb_time_get_tm(mrb_state *mrb, mrb_value time);
 
 MRB_END_DECL
 
diff --git a/mrbgems/mruby-time/src/time.c b/mrbgems/mruby-time/src/time.c
index d502774dd..c28ac2322 100644
--- a/mrbgems/mruby-time/src/time.c
+++ b/mrbgems/mruby-time/src/time.c
@@ -753,6 +753,14 @@ time_get_ptr(mrb_state *mrb, mrb_value time)
   return tm;
 }
 
+MRB_API struct tm*
+mrb_time_get_tm(mrb_state *mrb, mrb_value time)
+{
+  struct mrb_time *tm = time_get_ptr(mrb, time);
+  time_update_datetime(mrb, tm, FALSE);
+  return &tm->datetime;
+}
+
 /*
  * call-seq:
  *   time == other_time -> true or false