diff --git a/ANNOUNCE b/ANNOUNCE
index 83bf76e..9c9bb18 100644
--- a/ANNOUNCE
+++ b/ANNOUNCE
@@ -1,13 +1,5 @@
-libpng 1.6.38.git
-=================
-
-This is a development version, not intended to be a public release.
-It will be replaced by a public release, or by another development
-version, at a later time.
-
-
-libpng 1.6.37 - April 14, 2019
-==============================
+libpng 1.6.38 - September 14, 2022
+==================================
 
 This is a public release of libpng, intended for use in production code.
 
@@ -17,13 +9,13 @@
 
 Source files with LF line endings (for Unix/Linux):
 
- * libpng-1.6.37.tar.xz (LZMA-compressed, recommended)
- * libpng-1.6.37.tar.gz
+ * libpng-1.6.38.tar.xz (LZMA-compressed, recommended)
+ * libpng-1.6.38.tar.gz
 
 Source files with CRLF line endings (for Windows):
 
- * lp1637.7z (LZMA-compressed, recommended)
- * lp1637.zip
+ * lp1638.7z (LZMA-compressed, recommended)
+ * lp1638.zip
 
 Other information:
 
@@ -33,20 +25,13 @@
  * TRADEMARK.md
 
 
-Changes since the previous public release (version 1.6.36)
+Changes since the previous public release (version 1.6.37)
 ----------------------------------------------------------
 
- * Fixed a use-after-free vulnerability (CVE-2019-7317) in png_image_free.
- * Fixed a memory leak in the ARM NEON implementation of png_do_expand_palette.
- * Fixed a memory leak in pngtest.c.
- * Fixed two vulnerabilities (CVE-2018-14048, CVE-2018-14550) in
-   contrib/pngminus; refactor.
- * Changed the license of contrib/pngminus to MIT; refresh makefile and docs.
-   (Contributed by Willem van Schaik)
- * Fixed a typo in the libpng license v2.
-   (Contributed by Miguel Ojeda)
- * Added makefiles for AddressSanitizer-enabled builds.
- * Cleaned up various makefiles.
+ * Added configurations and scripts for continuous integration.
+ * Fixed various errors in the handling of tRNS, hIST and eXIf.
+ * Implemented many stability improvements across all platforms.
+ * Updated the internal documentation.
 
 
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net.
diff --git a/CHANGES b/CHANGES
index 9aefd89..9a86869 100644
--- a/CHANGES
+++ b/CHANGES
@@ -6103,7 +6103,11 @@
   Added makefiles for AddressSanitizer-enabled builds.
   Cleaned up various makefiles.
 
-Version 1.6.38 [TODO]
+Version 1.6.38 [September 14, 2022]
+  Added configurations and scripts for continuous integration.
+  Fixed various errors in the handling of tRNS, hIST and eXIf.
+  Implemented many stability improvements across all platforms.
+  Updated the internal documentation.
 
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net.
 Subscription is required; visit
diff --git a/CMakeLists.txt b/CMakeLists.txt
index eeb0157..8652564 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -33,8 +33,8 @@
 set(PNGLIB_MAJOR 1)
 set(PNGLIB_MINOR 6)
 set(PNGLIB_REVISION 38)
-#set(PNGLIB_SUBREVISION 0)
-set(PNGLIB_SUBREVISION "git")
+set(PNGLIB_SUBREVISION 0)
+#set(PNGLIB_SUBREVISION "git")
 set(PNGLIB_NAME libpng${PNGLIB_MAJOR}${PNGLIB_MINOR})
 set(PNGLIB_VERSION ${PNGLIB_MAJOR}.${PNGLIB_MINOR}.${PNGLIB_REVISION})
 set(PNGLIB_SHARED_SOVERSION ${PNGLIB_MAJOR}${PNGLIB_MINOR})
diff --git a/README b/README
index f46a599..e6e72aa 100644
--- a/README
+++ b/README
@@ -1,5 +1,5 @@
-README for libpng version 1.6.38.git
-====================================
+README for libpng version 1.6.38
+================================
 
 See the note about version numbers near the top of png.h.
 See INSTALL for instructions on how to install libpng.
diff --git a/configure b/configure
index cf2e632..b66bb11 100755
--- a/configure
+++ b/configure
@@ -1,6 +1,6 @@
 #! /bin/sh
 # Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.71 for libpng 1.6.38.git.
+# Generated by GNU Autoconf 2.71 for libpng 1.6.38.
 #
 # Report bugs to <png-mng-implement@lists.sourceforge.net>.
 #
@@ -621,8 +621,8 @@
 # Identity of this package.
 PACKAGE_NAME='libpng'
 PACKAGE_TARNAME='libpng'
-PACKAGE_VERSION='1.6.38.git'
-PACKAGE_STRING='libpng 1.6.38.git'
+PACKAGE_VERSION='1.6.38'
+PACKAGE_STRING='libpng 1.6.38'
 PACKAGE_BUGREPORT='png-mng-implement@lists.sourceforge.net'
 PACKAGE_URL=''
 
@@ -1411,7 +1411,7 @@
   # Omit some internal or obsolete options to make the list less imposing.
   # This message is too long to be a string in the A/UX 3.1 sh.
   cat <<_ACEOF
-\`configure' configures libpng 1.6.38.git to adapt to many kinds of systems.
+\`configure' configures libpng 1.6.38 to adapt to many kinds of systems.
 
 Usage: $0 [OPTION]... [VAR=VALUE]...
 
@@ -1482,7 +1482,7 @@
 
 if test -n "$ac_init_help"; then
   case $ac_init_help in
-     short | recursive ) echo "Configuration of libpng 1.6.38.git:";;
+     short | recursive ) echo "Configuration of libpng 1.6.38:";;
    esac
   cat <<\_ACEOF
 
@@ -1663,7 +1663,7 @@
 test -n "$ac_init_help" && exit $ac_status
 if $ac_init_version; then
   cat <<\_ACEOF
-libpng configure 1.6.38.git
+libpng configure 1.6.38
 generated by GNU Autoconf 2.71
 
 Copyright (C) 2021 Free Software Foundation, Inc.
@@ -1919,7 +1919,7 @@
 This file contains any messages produced by compilers while
 running configure, to aid debugging if configure makes a mistake.
 
-It was created by libpng $as_me 1.6.38.git, which was
+It was created by libpng $as_me 1.6.38, which was
 generated by GNU Autoconf 2.71.  Invocation command line was
 
   $ $0$ac_configure_args_raw
@@ -3196,7 +3196,7 @@
 
 # Define the identity of the package.
  PACKAGE='libpng'
- VERSION='1.6.38.git'
+ VERSION='1.6.38'
 
 
 printf "%s\n" "#define PACKAGE \"$PACKAGE\"" >>confdefs.h
@@ -3328,7 +3328,7 @@
 
 
 
-PNGLIB_VERSION=1.6.38.git
+PNGLIB_VERSION=1.6.38
 PNGLIB_MAJOR=1
 PNGLIB_MINOR=6
 PNGLIB_RELEASE=38
@@ -14894,7 +14894,7 @@
 # report actual input values of CONFIG_FILES etc. instead of their
 # values after options handling.
 ac_log="
-This file was extended by libpng $as_me 1.6.38.git, which was
+This file was extended by libpng $as_me 1.6.38, which was
 generated by GNU Autoconf 2.71.  Invocation command line was
 
   CONFIG_FILES    = $CONFIG_FILES
@@ -14962,7 +14962,7 @@
 cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 ac_cs_config='$ac_cs_config_escaped'
 ac_cs_version="\\
-libpng config.status 1.6.38.git
+libpng config.status 1.6.38
 configured by $0, generated by GNU Autoconf 2.71,
   with options \\"\$ac_cs_config\\"
 
diff --git a/configure.ac b/configure.ac
index f12da26..7b6d5b9 100644
--- a/configure.ac
+++ b/configure.ac
@@ -25,7 +25,7 @@
 
 dnl Version number stuff here:
 
-AC_INIT([libpng],[1.6.38.git],[png-mng-implement@lists.sourceforge.net])
+AC_INIT([libpng],[1.6.38],[png-mng-implement@lists.sourceforge.net])
 AC_CONFIG_MACRO_DIR([scripts])
 
 # libpng does not follow GNU file name conventions (hence 'foreign')
@@ -46,7 +46,7 @@
 dnl AM_PREREQ([1.11.2])
 dnl stop configure from automagically running automake
 
-PNGLIB_VERSION=1.6.38.git
+PNGLIB_VERSION=1.6.38
 PNGLIB_MAJOR=1
 PNGLIB_MINOR=6
 PNGLIB_RELEASE=38
diff --git a/libpng-manual.txt b/libpng-manual.txt
index 6d8e8eb..19b1e0c 100644
--- a/libpng-manual.txt
+++ b/libpng-manual.txt
@@ -1,6 +1,6 @@
 libpng-manual.txt - A description on how to use and modify libpng
 
- Copyright (c) 2018-2019 Cosmin Truta
+ Copyright (c) 2018-2022 Cosmin Truta
  Copyright (c) 1998-2018 Glenn Randers-Pehrson
 
  This document is released under the libpng license.
@@ -9,9 +9,9 @@
 
  Based on:
 
- libpng version 1.6.36, December 2018, through 1.6.37 - April 2019
+ libpng version 1.6.36, December 2018, through 1.6.38 - September 2022
  Updated and distributed by Cosmin Truta
- Copyright (c) 2018-2019 Cosmin Truta
+ Copyright (c) 2018-2022 Cosmin Truta
 
  libpng versions 0.97, January 1998, through 1.6.35 - July 2018
  Updated and distributed by Glenn Randers-Pehrson
diff --git a/libpng.3 b/libpng.3
index 4bd961a..b7fc182 100644
--- a/libpng.3
+++ b/libpng.3
@@ -1,6 +1,6 @@
-.TH LIBPNG 3 "April 14, 2019"
+.TH LIBPNG 3 "September 14, 2022"
 .SH NAME
-libpng \- Portable Network Graphics (PNG) Reference Library 1.6.37
+libpng \- Portable Network Graphics (PNG) Reference Library 1.6.38
 
 .SH SYNOPSIS
 \fB#include <png.h>\fP
@@ -519,7 +519,7 @@
 .SH LIBPNG.TXT
 libpng-manual.txt - A description on how to use and modify libpng
 
- Copyright (c) 2018-2019 Cosmin Truta
+ Copyright (c) 2018-2022 Cosmin Truta
  Copyright (c) 1998-2018 Glenn Randers-Pehrson
 
  This document is released under the libpng license.
@@ -528,9 +528,9 @@
 
  Based on:
 
- libpng version 1.6.36, December 2018, through 1.6.37 - April 2019
+ libpng version 1.6.36, December 2018, through 1.6.38 - September 2022
  Updated and distributed by Cosmin Truta
- Copyright (c) 2018-2019 Cosmin Truta
+ Copyright (c) 2018-2022 Cosmin Truta
 
  libpng versions 0.97, January 1998, through 1.6.35 - July 2018
  Updated and distributed by Glenn Randers-Pehrson
diff --git a/libpngpf.3 b/libpngpf.3
index 6909c70..3da3b86 100644
--- a/libpngpf.3
+++ b/libpngpf.3
@@ -1,6 +1,6 @@
-.TH LIBPNGPF 3 "April 14, 2019"
+.TH LIBPNGPF 3 "September 14, 2022"
 .SH NAME
-libpng \- Portable Network Graphics (PNG) Reference Library 1.6.37
+libpng \- Portable Network Graphics (PNG) Reference Library 1.6.38
 (private functions)
 
 .SH SYNOPSIS
diff --git a/png.5 b/png.5
index c2da95c..20e6aa7 100644
--- a/png.5
+++ b/png.5
@@ -1,4 +1,4 @@
-.TH PNG 5 "April 14, 2019"
+.TH PNG 5 "September 14, 2022"
 .SH NAME
 png \- Portable Network Graphics (PNG) format
 
@@ -43,7 +43,7 @@
 https://www.w3.org/TR/REC-png-961001
 
 .SH AUTHORS
-This man page: Cosmin Truta, Glenn Randers-Pehrson
+This man page: Glenn Randers-Pehrson, Cosmin Truta
 .LP
 Portable Network Graphics (PNG) Specification (Second Edition)
 Information technology - Computer graphics and image processing -
@@ -60,7 +60,7 @@
 .LP
 This man page is
 .br
-Copyright (c) 2018-2019 Cosmin Truta.
+Copyright (c) 2018 Cosmin Truta.
 .br
 Copyright (c) 1998-2006 Glenn Randers-Pehrson.
 .br
diff --git a/png.c b/png.c
index 12f4050..fc09564 100644
--- a/png.c
+++ b/png.c
@@ -14,7 +14,7 @@
 #include "pngpriv.h"
 
 /* Generate a compiler error if there is an old png.h in the search path. */
-typedef png_libpng_version_1_6_38_git Your_png_h_is_not_version_1_6_38_git;
+typedef png_libpng_version_1_6_38 Your_png_h_is_not_version_1_6_38;
 
 #ifdef __GNUC__
 /* The version tests may need to be added to, but the problem warning has
@@ -815,7 +815,7 @@
    return PNG_STRING_COPYRIGHT
 #else
    return PNG_STRING_NEWLINE \
-      "libpng version 1.6.38.git" PNG_STRING_NEWLINE \
+      "libpng version 1.6.38" PNG_STRING_NEWLINE \
       "Copyright (c) 2018-2022 Cosmin Truta" PNG_STRING_NEWLINE \
       "Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson" \
       PNG_STRING_NEWLINE \
diff --git a/png.h b/png.h
index 15129f7..5fb494f 100644
--- a/png.h
+++ b/png.h
@@ -1,7 +1,7 @@
 
 /* png.h - header file for PNG reference library
  *
- * libpng version 1.6.38.git
+ * libpng version 1.6.38 - September 14, 2022
  *
  * Copyright (c) 2018-2022 Cosmin Truta
  * Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson
@@ -15,7 +15,7 @@
  *   libpng versions 0.89, June 1996, through 0.96, May 1997: Andreas Dilger
  *   libpng versions 0.97, January 1998, through 1.6.35, July 2018:
  *     Glenn Randers-Pehrson
- *   libpng versions 1.6.36, December 2018, through 1.6.37, April 2019:
+ *   libpng versions 1.6.36, December 2018, through 1.6.38, September 2022:
  *     Cosmin Truta
  *   See also "Contributing Authors", below.
  */
@@ -239,7 +239,7 @@
  *    ...
  *    1.5.30                  15    10530  15.so.15.30[.0]
  *    ...
- *    1.6.37                  16    10637  16.so.16.37[.0]
+ *    1.6.38                  16    10638  16.so.16.38[.0]
  *
  *    Henceforth the source version will match the shared-library major and
  *    minor numbers; the shared-library major version number will be used for
@@ -278,8 +278,8 @@
  */
 
 /* Version information for png.h - this should match the version in png.c */
-#define PNG_LIBPNG_VER_STRING "1.6.38.git"
-#define PNG_HEADER_VERSION_STRING " libpng version 1.6.38.git\n"
+#define PNG_LIBPNG_VER_STRING "1.6.38"
+#define PNG_HEADER_VERSION_STRING " libpng version 1.6.38 - September 14, 2022\n"
 
 #define PNG_LIBPNG_VER_SONUM   16
 #define PNG_LIBPNG_VER_DLLNUM  16
@@ -292,7 +292,7 @@
 /* This should be zero for a public release, or non-zero for a
  * development version.  [Deprecated]
  */
-#define PNG_LIBPNG_VER_BUILD  1
+#define PNG_LIBPNG_VER_BUILD  0
 
 /* Release Status */
 #define PNG_LIBPNG_BUILD_ALPHA    1
@@ -309,7 +309,7 @@
 #define PNG_LIBPNG_BUILD_SPECIAL 32 /* Cannot be OR'ed with
                                        PNG_LIBPNG_BUILD_PRIVATE */
 
-#define PNG_LIBPNG_BUILD_BASE_TYPE PNG_LIBPNG_BUILD_BETA
+#define PNG_LIBPNG_BUILD_BASE_TYPE PNG_LIBPNG_BUILD_STABLE
 
 /* Careful here.  At one time, Guy wanted to use 082, but that
  * would be octal.  We must not include leading zeros.
@@ -318,7 +318,7 @@
  * From version 1.0.1 it is:
  * XXYYZZ, where XX=major, YY=minor, ZZ=release
  */
-#define PNG_LIBPNG_VER 10638 /* 1.6.38.git */
+#define PNG_LIBPNG_VER 10638 /* 1.6.38 */
 
 /* Library configuration: these options cannot be changed after
  * the library has been built.
@@ -428,7 +428,7 @@
 /* This triggers a compiler error in png.c, if png.c and png.h
  * do not agree upon the version number.
  */
-typedef char* png_libpng_version_1_6_38_git;
+typedef char* png_libpng_version_1_6_38;
 
 /* Basic control structions.  Read libpng-manual.txt or libpng.3 for more info.
  *
diff --git a/pngconf.h b/pngconf.h
index 78882ae..89d28f8 100644
--- a/pngconf.h
+++ b/pngconf.h
@@ -1,7 +1,7 @@
 
 /* pngconf.h - machine-configurable file for libpng
  *
- * libpng version 1.6.38.git
+ * libpng version 1.6.38
  *
  * Copyright (c) 2018-2022 Cosmin Truta
  * Copyright (c) 1998-2002,2004,2006-2016,2018 Glenn Randers-Pehrson
diff --git a/pngtest.c b/pngtest.c
index dd5113d..6f18300 100644
--- a/pngtest.c
+++ b/pngtest.c
@@ -2155,4 +2155,4 @@
 #endif
 
 /* Generate a compiler error if there is an old png.h in the search path. */
-typedef png_libpng_version_1_6_38_git Your_png_h_is_not_version_1_6_38_git;
+typedef png_libpng_version_1_6_38 Your_png_h_is_not_version_1_6_38;
diff --git a/scripts/libpng-config-head.in b/scripts/libpng-config-head.in
index c1da02c..028c3b8 100644
--- a/scripts/libpng-config-head.in
+++ b/scripts/libpng-config-head.in
@@ -11,7 +11,7 @@
 
 # Modeled after libxml-config.
 
-version=1.6.38.git
+version=1.6.38
 prefix=""
 libdir=""
 libs=""
diff --git a/scripts/libpng.pc.in b/scripts/libpng.pc.in
index 19afcc3..70ae041 100644
--- a/scripts/libpng.pc.in
+++ b/scripts/libpng.pc.in
@@ -5,6 +5,6 @@
 
 Name: libpng
 Description: Loads and saves PNG files
-Version: 1.6.38.git
+Version: 1.6.38
 Libs: -L${libdir} -lpng16
 Cflags: -I${includedir}
diff --git a/scripts/makefile.darwin b/scripts/makefile.darwin
index e41a3e6..247343f 100644
--- a/scripts/makefile.darwin
+++ b/scripts/makefile.darwin
@@ -23,7 +23,7 @@
 # Library name:
 LIBNAME = libpng16
 PNGMAJ = 16
-RELEASE = 37
+RELEASE = 38
 
 # Shared library names:
 LIBSO=$(LIBNAME).dylib
diff --git a/scripts/makefile.linux b/scripts/makefile.linux
index beffbbb..1d8c663 100644
--- a/scripts/makefile.linux
+++ b/scripts/makefile.linux
@@ -11,7 +11,7 @@
 # Library name:
 LIBNAME = libpng16
 PNGMAJ = 16
-RELEASE = 37
+RELEASE = 38
 
 # Shared library names:
 LIBSO=$(LIBNAME).so
diff --git a/scripts/makefile.msys b/scripts/makefile.msys
index 9b4149e..d5fadc1 100644
--- a/scripts/makefile.msys
+++ b/scripts/makefile.msys
@@ -19,7 +19,7 @@
 # Library name:
 LIBNAME = libpng16
 PNGMAJ = 16
-RELEASE = 37
+RELEASE = 38
 
 # Shared library names:
 LIBSO=$(LIBNAME).dll
diff --git a/scripts/makefile.netbsd b/scripts/makefile.netbsd
index fafd1b2..48cac07 100644
--- a/scripts/makefile.netbsd
+++ b/scripts/makefile.netbsd
@@ -14,7 +14,7 @@
 INCSDIR=${LOCALBASE}/include
 
 SHLIB_MAJOR=	16
-SHLIB_MINOR=	1.6.38.git
+SHLIB_MINOR=	1.6.38
 
 LIB=	png
 SRCS=	png.c pngerror.c pngget.c pngmem.c pngpread.c \
diff --git a/scripts/makefile.openbsd b/scripts/makefile.openbsd
index ad1da03..97d11b8 100644
--- a/scripts/makefile.openbsd
+++ b/scripts/makefile.openbsd
@@ -12,7 +12,7 @@
 MANDIR= ${PREFIX}/man/cat
 
 SHLIB_MAJOR=	16
-SHLIB_MINOR=	1.6.38.git
+SHLIB_MINOR=	1.6.38
 
 LIB=	png
 SRCS=	png.c pngerror.c pngget.c pngmem.c pngpread.c \
diff --git a/scripts/pnglibconf.h.prebuilt b/scripts/pnglibconf.h.prebuilt
index 967011c..89d5b4c 100644
--- a/scripts/pnglibconf.h.prebuilt
+++ b/scripts/pnglibconf.h.prebuilt
@@ -1,6 +1,6 @@
 /* pnglibconf.h - library build configuration */
 
-/* libpng version 1.6.38.git */
+/* libpng version 1.6.38 */
 
 /* Copyright (c) 2018-2022 Cosmin Truta */
 /* Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson */