diff --git a/src/uharfbuzz/_harfbuzz.pyx b/src/uharfbuzz/_harfbuzz.pyx
index 1ffcd26..cbe3bf3 100644
--- a/src/uharfbuzz/_harfbuzz.pyx
+++ b/src/uharfbuzz/_harfbuzz.pyx
@@ -2446,6 +2446,7 @@ class SubsetFlags(IntFlag):
     NOTDEF_OUTLINE = HB_SUBSET_FLAGS_NOTDEF_OUTLINE
     GLYPH_NAMES = HB_SUBSET_FLAGS_GLYPH_NAMES
     NO_PRUNE_UNICODE_RANGES = HB_SUBSET_FLAGS_NO_PRUNE_UNICODE_RANGES
+    NO_LAYOUT_CLOSURE = HB_SUBSET_FLAGS_NO_LAYOUT_CLOSURE
 
 
 cdef class SubsetInput:
diff --git a/src/uharfbuzz/charfbuzz.pxd b/src/uharfbuzz/charfbuzz.pxd
index 90e96d7..529748d 100644
--- a/src/uharfbuzz/charfbuzz.pxd
+++ b/src/uharfbuzz/charfbuzz.pxd
@@ -1192,8 +1192,7 @@ cdef extern from "hb-subset.h":
         HB_SUBSET_FLAGS_NOTDEF_OUTLINE
         HB_SUBSET_FLAGS_GLYPH_NAMES
         HB_SUBSET_FLAGS_NO_PRUNE_UNICODE_RANGES
-        # Not supported yet: HB_SUBSET_FLAGS_PATCH_MODE
-        # Not supported yet: HB_SUBSET_FLAGS_OMIT_GLYF
+        HB_SUBSET_FLAGS_NO_LAYOUT_CLOSURE
     ctypedef enum hb_subset_sets_t:
         HB_SUBSET_SETS_GLYPH_INDEX
         HB_SUBSET_SETS_UNICODE