diff --git a/docs/harfbuzz-sections.txt b/docs/harfbuzz-sections.txt
index ca99c1d07..49bd1db98 100644
--- a/docs/harfbuzz-sections.txt
+++ b/docs/harfbuzz-sections.txt
@@ -166,11 +166,15 @@ HB_TAG_MAX_SIGNED
 HB_LANGUAGE_INVALID
 HB_FEATURE_GLOBAL_END
 HB_FEATURE_GLOBAL_START
+HB_HAS_CAIRO
 HB_HAS_CORETEXT
+HB_HAS_DIRECTWRITE
 HB_HAS_FREETYPE
+HB_HAS_GDI
 HB_HAS_GLIB
 HB_HAS_GRAPHITE
-HB_HAS_CAIRO
+HB_HAS_ICU
+HB_HAS_UNISCRIBE
 <SUBSECTION Private>
 HB_BEGIN_DECLS
 HB_END_DECLS