diff --git a/5.15.2/qtbase/src/3rdparty/harfbuzz-ng/src/hb-coretext.cc b/5.15.2/qtbase/src/3rdparty/harfbuzz-ng/src/hb-coretext.cc
index d64cb7e..11b6dee 100644
--- a/5.15.2/qtbase/src/3rdparty/harfbuzz-ng/src/hb-coretext.cc
+++ b/5.15.2/qtbase/src/3rdparty/harfbuzz-ng/src/hb-coretext.cc
@@ -1322,7 +1322,7 @@ struct hb_coretext_aat_shaper_face_data_t {};
 hb_coretext_aat_shaper_face_data_t *
 _hb_coretext_aat_shaper_face_data_create (hb_face_t *face)
 {
-  static const hb_tag_t tags[] = {HB_CORETEXT_TAG_MORX, HB_CORETEXT_TAG_MORT, HB_CORETEXT_TAG_KERX};
+  static const hb_tag_t tags[] = {HB_CORETEXT_TAG_MORX, HB_CORETEXT_TAG_MORT, HB_CORETEXT_TAG_KERX, HB_CORETEXT_TAG_TRAK};
 
   for (unsigned int i = 0; i < ARRAY_LENGTH (tags); i++)
   {
diff --git a/5.15.2/qtbase/src/3rdparty/harfbuzz-ng/src/hb-coretext.h b/5.15.2/qtbase/src/3rdparty/harfbuzz-ng/src/hb-coretext.h
index 4b0a6f0..12f7d25 100644
--- a/5.15.2/qtbase/src/3rdparty/harfbuzz-ng/src/hb-coretext.h
+++ b/5.15.2/qtbase/src/3rdparty/harfbuzz-ng/src/hb-coretext.h
@@ -43,7 +43,7 @@ HB_BEGIN_DECLS
 #define HB_CORETEXT_TAG_MORT HB_TAG('m','o','r','t')
 #define HB_CORETEXT_TAG_MORX HB_TAG('m','o','r','x')
 #define HB_CORETEXT_TAG_KERX HB_TAG('k','e','r','x')
-
+#define HB_CORETEXT_TAG_TRAK HB_TAG('t','r','a','k')
 
 HB_EXTERN hb_face_t *
 hb_coretext_face_create (CGFontRef cg_font);