diff --git a/docs/harfbuzz-docs.xml b/docs/harfbuzz-docs.xml
index ea4c8aeed..99b2d0b76 100644
--- a/docs/harfbuzz-docs.xml
+++ b/docs/harfbuzz-docs.xml
@@ -133,6 +133,7 @@
       <index id="api-index-full"><title>API Index</title><xi:include href="xml/api-index-full.xml"><xi:fallback /></xi:include></index>
       <index id="deprecated-api-index" role="deprecated"><title>Index of deprecated API</title><xi:include href="xml/api-index-deprecated.xml"><xi:fallback /></xi:include></index>
 
+      <index id="api-index-2-7-3" role="2.7.3"><title>Index of new symbols in 2.7.3</title><xi:include href="xml/api-index-2.7.3.xml"><xi:fallback /></xi:include></index>
       <index id="api-index-2-6-0" role="2.6.0"><title>Index of new symbols in 2.6.0</title><xi:include href="xml/api-index-2.6.0.xml"><xi:fallback /></xi:include></index>
       <index id="api-index-2-5-0" role="2.5.0"><title>Index of new symbols in 2.5.0</title><xi:include href="xml/api-index-2.5.0.xml"><xi:fallback /></xi:include></index>
       <index id="api-index-2-4-0" role="2.4.0"><title>Index of new symbols in 2.4.0</title><xi:include href="xml/api-index-2.4.0.xml"><xi:fallback /></xi:include></index>
diff --git a/docs/harfbuzz-sections.txt b/docs/harfbuzz-sections.txt
index ef1b88da1..32f794b29 100644
--- a/docs/harfbuzz-sections.txt
+++ b/docs/harfbuzz-sections.txt
@@ -89,8 +89,11 @@ hb_buffer_normalize_glyphs
 hb_buffer_reverse
 hb_buffer_reverse_range
 hb_buffer_reverse_clusters
+hb_buffer_serialize
 hb_buffer_serialize_glyphs
 hb_buffer_deserialize_glyphs
+hb_buffer_serialize_unicode
+hb_buffer_deserialize_unicode
 hb_buffer_serialize_format_from_string
 hb_buffer_serialize_format_to_string
 hb_buffer_serialize_list_formats