diff --git a/stb_divide.h b/stb_divide.h
index 74ef396..84874d5 100644
--- a/stb_divide.h
+++ b/stb_divide.h
@@ -1,8 +1,9 @@
-// stb_divide.h - v0.91 - public domain - Sean Barrett, Feb 2010
+// stb_divide.h - v0.92 - public domain - Sean Barrett, Feb 2010
 // Three kinds of divide/modulus of signed integers.
 //
 // HISTORY
 //
+//   v0.92  2019-02-25  Fix warning
 //   v0.91  2010-02-27  Fix euclidean division by INT_MIN for non-truncating C
 //                      Check result with 64-bit math to catch such cases
 //   v0.90  2010-02-24  First public release
diff --git a/stb_image.h b/stb_image.h
index f58ee52..8b71060 100644
--- a/stb_image.h
+++ b/stb_image.h
@@ -1,4 +1,4 @@
-/* stb_image - v2.20 - public domain image loader - http://nothings.org/stb
+/* stb_image - v2.21 - public domain image loader - http://nothings.org/stb
                                   no warranty implied; use at your own risk
 
    Do this:
@@ -48,6 +48,7 @@ LICENSE
 
 RECENT REVISION HISTORY:
 
+      2.21  (2019-02-25) fix typo in comment
       2.20  (2019-02-07) support utf8 filenames in Windows; fix warnings and platform ifdefs 
       2.19  (2018-02-11) fix warning
       2.18  (2018-01-30) fix warnings
diff --git a/stb_image_write.h b/stb_image_write.h
index ddc2c55..ebaa0c5 100644
--- a/stb_image_write.h
+++ b/stb_image_write.h
@@ -1,4 +1,4 @@
-/* stb_image_write - v1.10 - public domain - http://nothings.org/stb/stb_image_write.h
+/* stb_image_write - v1.11 - public domain - http://nothings.org/stb/stb_image_write.h
    writes out PNG/BMP/TGA/JPEG/HDR images to C stdio - Sean Barrett 2010-2015
                                      no warranty implied; use at your own risk
 
diff --git a/stb_rect_pack.h b/stb_rect_pack.h
index c47fd94..d32c8f9 100644
--- a/stb_rect_pack.h
+++ b/stb_rect_pack.h
@@ -1,4 +1,4 @@
-// stb_rect_pack.h - v0.99 - public domain - rectangle packing
+// stb_rect_pack.h - v1.00 - public domain - rectangle packing
 // Sean Barrett 2014
 //
 // Useful for e.g. packing rectangular textures into an atlas.
@@ -35,6 +35,7 @@
 //
 // Version history:
 //
+//     1.00  (2019-02-25)  avoid small space waste; gracefully fail too-wide rectangles
 //     0.99  (2019-02-07)  warning fixes
 //     0.11  (2017-03-03)  return packing success/fail result
 //     0.10  (2016-10-25)  remove cast-away-const to avoid warnings
diff --git a/stb_tilemap_editor.h b/stb_tilemap_editor.h
index bf1fbe8..cab2e24 100644
--- a/stb_tilemap_editor.h
+++ b/stb_tilemap_editor.h
@@ -1,4 +1,4 @@
-// stb_tilemap_editor.h - v0.39 - Sean Barrett - http://nothings.org/stb
+// stb_tilemap_editor.h - v0.40 - Sean Barrett - http://nothings.org/stb
 // placed in the public domain - not copyrighted - first released 2014-09
 //
 // Embeddable tilemap editor for C/C++
@@ -275,6 +275,8 @@
 //   either approach allows cut&pasting between levels.)
 //
 // REVISION HISTORY
+//   0.40  fix warning
+//   0.39  fix warning
 //   0.38  fix warning
 //   0.37  fix warning
 //   0.36  minor compiler support
diff --git a/stb_truetype.h b/stb_truetype.h
index 37b96d6..767f005 100644
--- a/stb_truetype.h
+++ b/stb_truetype.h
@@ -1,4 +1,4 @@
-// stb_truetype.h - v1.20 - public domain
+// stb_truetype.h - v1.21 - public domain
 // authored from 2009-2016 by Sean Barrett / RAD Game Tools
 //
 //   This library processes TrueType files:
@@ -49,6 +49,7 @@
 //       
 // VERSION HISTORY
 //
+//   1.21 (2019-02-25) fix warning
 //   1.20 (2019-02-07) PackFontRange skips missing codepoints; GetScaleFontVMetrics()
 //   1.19 (2018-02-11) GPOS kerning, STBTT_fmod
 //   1.18 (2018-01-29) add missing function
diff --git a/stb_voxel_render.h b/stb_voxel_render.h
index 895921d..c3ad981 100644
--- a/stb_voxel_render.h
+++ b/stb_voxel_render.h
@@ -1,4 +1,4 @@
-// stb_voxel_render.h - v0.86 - Sean Barrett, 2015 - public domain
+// stb_voxel_render.h - v0.87 - 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
 //
+//   0.87   (2019-02-25)  fix warning
 //   0.86   (2019-02-07)  fix typos in comments
 //   0.85   (2017-03-03)  add block_selector (by guitarfreak)
 //   0.84   (2016-04-02)  fix GLSL syntax error on glModelView path