diff --git a/stb_truetype.h b/stb_truetype.h
index bc61ecf..8c9e970 100644
--- a/stb_truetype.h
+++ b/stb_truetype.h
@@ -50,7 +50,7 @@
 //       
 // VERSION HISTORY
 //
-//   1.23 (2020-02-02) query SVG data for glyphs; query whole kerning table
+//   1.23 (2020-02-02) query SVG data for glyphs; query whole kerning table (but only kern not GPOS)
 //   1.22 (2019-08-11) minimize missing-glyph duplication; fix kerning if both 'GPOS' and 'kern' are defined 
 //   1.21 (2019-02-25) fix warning
 //   1.20 (2019-02-07) PackFontRange skips missing codepoints; GetScaleFontVMetrics()
diff --git a/stb_vorbis.c b/stb_vorbis.c
index 2c01d29..045e386 100644
--- a/stb_vorbis.c
+++ b/stb_vorbis.c
@@ -1,4 +1,4 @@
-// Ogg Vorbis audio decoder - v1.17 - public domain
+// Ogg Vorbis audio decoder - v1.18 - public domain
 // http://nothings.org/stb_vorbis/
 //
 // Original version written by Sean Barrett in 2007.
@@ -34,6 +34,7 @@
 //    github:audinowho   Dougall Johnson
 //
 // Partial history:
+//    1.18    - 2020-02-02 - fix seek bugs; parse header comments; misc warnings etc.
 //    1.17    - 2019-07-08 - fix CVE-2019-13217..CVE-2019-13223 (by ForAllSecure)
 //    1.16    - 2019-03-04 - fix warnings
 //    1.15    - 2019-02-07 - explicit failure if Ogg Skeleton data is found
diff --git a/stb_voxel_render.h b/stb_voxel_render.h
index b84bd8f..4e2d7cb 100644
--- a/stb_voxel_render.h
+++ b/stb_voxel_render.h
@@ -1,4 +1,4 @@
-// stb_voxel_render.h - v0.88 - Sean Barrett, 2015 - public domain
+// stb_voxel_render.h - v0.89 - Sean Barrett, 2015 - public domain
 //
 // This library helps render large-scale "voxel" worlds for games,
 // in this case, one with blocks that can have textures and that
@@ -192,6 +192,7 @@
 //
 // VERSION HISTORY
 //
+//   0.89   (2020-02-02)  bugfix in sample code
 //   0.88   (2019-03-04)  fix warnings
 //   0.87   (2019-02-25)  fix warning
 //   0.86   (2019-02-07)  fix typos in comments
diff --git a/stretchy_buffer.h b/stretchy_buffer.h
index eaac47a..387fe7b 100644
--- a/stretchy_buffer.h
+++ b/stretchy_buffer.h
@@ -1,7 +1,8 @@
-// stretchy_buffer.h - v1.03 - public domain - nothings.org/stb
+// stretchy_buffer.h - v1.04 - public domain - nothings.org/stb
 // a vector<>-like dynamic array for C
 //
 // version history:
+//      1.04 -  fix warning
 //      1.03 -  compile as C++ maybe
 //      1.02 -  tweaks to syntax for no good reason
 //      1.01 -  added a "common uses" documentation section