diff --git a/win32/common/libgstreamer.def b/win32/common/libgstreamer.def
index 35496c1d32..c9a81d4bb0 100644
--- a/win32/common/libgstreamer.def
+++ b/win32/common/libgstreamer.def
@@ -205,6 +205,8 @@ EXPORTS
     gst_element_get_bus
     gst_bus_post
     gst_message_new_warning
+    gst_message_new_state_dirty
+    gst_message_new_state_changed
     
     gst_mini_object_ref
     gst_marshal_VOID__OBJECT_OBJECT
@@ -231,6 +233,7 @@ EXPORTS
 	gst_element_post_message
 	gst_clock_id_wait
 	gst_clock_new_single_shot_id
+	gst_clock_get_time
 	gst_pad_activate_push
 	gst_pad_activate_pull
 	gst_pad_check_pull_range
@@ -242,7 +245,9 @@ EXPORTS
 	gst_pad_set_getrange_function
 	gst_pad_set_checkgetrange_function
 	gst_query_set_position
+	gst_query_set_duration
 	gst_query_parse_position
+	gst_query_parse_duration
 	gst_event_new_flush_stop
 	gst_pad_push_event
 	gst_event_new_flush_start