diff --git a/docs/harfbuzz-docs.xml b/docs/harfbuzz-docs.xml
index ea99732ca..7a42d2378 100644
--- a/docs/harfbuzz-docs.xml
+++ b/docs/harfbuzz-docs.xml
@@ -180,9 +180,9 @@
         <title>Index of new symbols in 1.2.3</title>
         <xi:include href="xml/api-index-1.2.3.xml"><xi:fallback /></xi:include>
       </index>
-      <index id="api-index-1-4-0" role="1.4.0">
-        <title>Index of new symbols in 1.4.0</title>
-        <xi:include href="xml/api-index-1.4.0.xml"><xi:fallback /></xi:include>
+      <index id="api-index-1.3.3" role="1.3.3">
+        <title>Index of new symbols in 1.3.3</title>
+        <xi:include href="xml/api-index-1.3.3.xml"><xi:fallback /></xi:include>
       </index>
       <index id="deprecated-api-index" role="deprecated">
         <title>Index of deprecated API</title>
diff --git a/docs/harfbuzz-sections.txt b/docs/harfbuzz-sections.txt
index 75d749293..270c87c44 100644
--- a/docs/harfbuzz-sections.txt
+++ b/docs/harfbuzz-sections.txt
@@ -427,19 +427,19 @@ Xhb_ot_layout_lookup_substitute
 HB_OT_TAG_MATH
 HB_OT_MATH_SCRIPT
 hb_ot_math_constant_t
+hb_ot_math_kern_t
+hb_ot_math_glyph_variant_t
 hb_ot_math_glyph_part_flags_t
 hb_ot_math_glyph_part_t
-hb_ot_math_glyph_variant_t
+hb_ot_math_has_data
 hb_ot_math_get_constant
-hb_ot_math_get_glyph_assembly
 hb_ot_math_get_glyph_italics_correction
-hb_ot_math_get_glyph_kerning
 hb_ot_math_get_glyph_top_accent_attachment
+hb_ot_math_get_glyph_kerning
+hb_ot_math_is_glyph_extended_shape
 hb_ot_math_get_glyph_variants
 hb_ot_math_get_min_connector_overlap
-hb_ot_math_has_data
-hb_ot_math_is_glyph_extended_shape
-hb_ot_math_kern_t
+hb_ot_math_get_glyph_assembly
 </SECTION>
 
 <SECTION>
diff --git a/src/hb-ot-layout.cc b/src/hb-ot-layout.cc
index 0826607d9..0501181a3 100644
--- a/src/hb-ot-layout.cc
+++ b/src/hb-ot-layout.cc
@@ -1237,7 +1237,7 @@ hb_ot_layout_substitute_lookup (OT::hb_apply_context_t *c,
  *
  * Return value: #TRUE if face has a MATH table and #FALSE otherwise
  *
- * Since: 1.4.0
+ * Since: 1.3.3
  **/
 hb_bool_t
 hb_ot_math_has_data (hb_face_t *face)
@@ -1258,7 +1258,7 @@ hb_ot_math_has_data (hb_face_t *face)
  *
  * Return value: the requested constant or 0
  *
- * Since: 1.4.0
+ * Since: 1.3.3
  **/
 hb_position_t
 hb_ot_math_get_constant (hb_font_t *font,
@@ -1275,7 +1275,7 @@ hb_ot_math_get_constant (hb_font_t *font,
  *
  * Return value: the italics correction of the glyph or 0
  *
- * Since: 1.4.0
+ * Since: 1.3.3
  **/
 hb_position_t
 hb_ot_math_get_glyph_italics_correction (hb_font_t *font,
@@ -1292,7 +1292,7 @@ hb_ot_math_get_glyph_italics_correction (hb_font_t *font,
  *
  * Return value: the top accent attachment of the glyph or 0
  *
- * Since: 1.4.0
+ * Since: 1.3.3
  **/
 hb_position_t
 hb_ot_math_get_glyph_top_accent_attachment (hb_font_t *font,
@@ -1309,7 +1309,7 @@ hb_ot_math_get_glyph_top_accent_attachment (hb_font_t *font,
  *
  * Return value: #TRUE if the glyph is an extended shape and #FALSE otherwise
  *
- * Since: 1.4.0
+ * Since: 1.3.3
  **/
 hb_bool_t
 hb_ot_math_is_glyph_extended_shape (hb_face_t *face,
@@ -1334,7 +1334,7 @@ hb_ot_math_is_glyph_extended_shape (hb_face_t *face,
  *
  * Return value: requested kerning or 0
  *
- * Since: 1.4.0
+ * Since: 1.3.3
  **/
 hb_position_t
 hb_ot_math_get_glyph_kerning (hb_font_t *font,
@@ -1363,7 +1363,7 @@ hb_ot_math_get_glyph_kerning (hb_font_t *font,
  *
  * Return value: the total number of size variants available or 0
  *
- * Since: 1.4.0
+ * Since: 1.3.3
  **/
 unsigned int
 hb_ot_math_get_glyph_variants (hb_font_t *font,
@@ -1392,7 +1392,7 @@ hb_ot_math_get_glyph_variants (hb_font_t *font,
  *
  * Return value: requested min connector overlap or 0
  *
- * Since: 1.4.0
+ * Since: 1.3.3
  **/
 hb_position_t
 hb_ot_math_get_min_connector_overlap (hb_font_t *font,
@@ -1420,7 +1420,7 @@ hb_ot_math_get_min_connector_overlap (hb_font_t *font,
  *
  * Return value: the total number of parts in the glyph assembly
  *
- * Since: 1.4.0
+ * Since: 1.3.3
  **/
 unsigned int
 hb_ot_math_get_glyph_assembly (hb_font_t *font,
diff --git a/src/hb-ot-math.h b/src/hb-ot-math.h
index 0fc251b55..521a5ca03 100644
--- a/src/hb-ot-math.h
+++ b/src/hb-ot-math.h
@@ -50,7 +50,7 @@ HB_BEGIN_DECLS
 /**
  * hb_ot_math_constant_t:
  *
- * Since: 1.4.0
+ * Since: 1.3.3
  */
 typedef enum {
   HB_OT_MATH_CONSTANT_SCRIPT_PERCENT_SCALE_DOWN = 0,
@@ -114,7 +114,7 @@ typedef enum {
 /**
  * hb_ot_math_kern_t:
  *
- * Since: 1.4.0
+ * Since: 1.3.3
  */
 typedef enum {
   HB_OT_MATH_KERN_TOP_RIGHT = 0,
@@ -126,7 +126,7 @@ typedef enum {
 /**
  * hb_ot_math_glyph_variant_t:
  *
- * Since: 1.4.0
+ * Since: 1.3.3
  */
 typedef struct hb_ot_math_glyph_variant_t {
   hb_codepoint_t glyph;
@@ -136,7 +136,7 @@ typedef struct hb_ot_math_glyph_variant_t {
 /**
  * hb_ot_math_glyph_part_flags_t:
  *
- * Since: 1.4.0
+ * Since: 1.3.3
  */
 typedef enum { /*< flags >*/
   HB_MATH_GLYPH_PART_FLAG_EXTENDER	= 0x00000001u  /* Extender glyph */
@@ -145,7 +145,7 @@ typedef enum { /*< flags >*/
 /**
  * hb_ot_math_glyph_part_t:
  *
- * Since: 1.4.0
+ * Since: 1.3.3
  */
 typedef struct hb_ot_math_glyph_part_t {
   hb_codepoint_t glyph;