diff --git a/COPYING.txt b/COPYING.txt
index b87116c..e4253d9 100644
--- a/COPYING.txt
+++ b/COPYING.txt
@@ -1,6 +1,6 @@
 ImageWorsener v1.2.0+ is distributed under an MIT-style license.
 
-Copyright (c) 2011-2018 Jason Summers
+Copyright (c) 2011-2021 Jason Summers
 <jason1@pobox.com>
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
diff --git a/changelog.txt b/changelog.txt
index b1eb4c6..ab6e6c7 100644
--- a/changelog.txt
+++ b/changelog.txt
@@ -1,3 +1,8 @@
+Version 1.3.4 - 9 Sep 2021
+ - (This release is mainly to refresh the Windows binaries.)
+ - Minor improvements to code quality and stability.
+ - Changed libtool versioning scheme.
+
 Version 1.3.3 - 19 Oct 2018
  - Security and stability fixes
 
diff --git a/configure.ac b/configure.ac
index 6603c54..5ad25a1 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,7 +1,7 @@
 
 dnl TODO: Figure out the actual minimum version that will work.
 AC_PREREQ([2.63])
-AC_INIT([imageworsener], [1.3.3])
+AC_INIT([imageworsener], [1.3.4])
 dnl AC_CONFIG_SRCDIR is just any unique file: a sanity check
 AC_CONFIG_SRCDIR([src/imagew.h])
 AM_CONFIG_HEADER([config.h])
diff --git a/readme.txt b/readme.txt
index cfe5910..7f99d50 100644
--- a/readme.txt
+++ b/readme.txt
@@ -1,6 +1,6 @@
 ImageWorsener is a raster image scaling and processing utility.
-Version 1.3.3
-Copyright (c) 2011-2018 Jason Summers  <jason1@pobox.com>
+Version 1.3.4
+Copyright (c) 2011-2021 Jason Summers  <jason1@pobox.com>
 
 Web site: https://entropymine.com/imageworsener/
 
diff --git a/scripts/makerelease-win.sh b/scripts/makerelease-win.sh
index a783a2b..aa0b96a 100755
--- a/scripts/makerelease-win.sh
+++ b/scripts/makerelease-win.sh
@@ -1,6 +1,6 @@
 #!/bin/bash
 
-VERSION=1.3.3
+VERSION=1.3.4
 WINDOWS_DOCS='readme.txt technical.txt COPYING.txt'
 
 if [ ! -f technical.txt ]
diff --git a/scripts/makerelease.sh b/scripts/makerelease.sh
index e3bafc7..8538dc9 100755
--- a/scripts/makerelease.sh
+++ b/scripts/makerelease.sh
@@ -1,6 +1,6 @@
 #!/bin/bash
 
-VERSION=1.3.3
+VERSION=1.3.4
 
 if [ ! -f technical.txt ]
 then
diff --git a/src/imagew-internals.h b/src/imagew-internals.h
index c5288a6..b54b0d4 100644
--- a/src/imagew-internals.h
+++ b/src/imagew-internals.h
@@ -5,7 +5,7 @@
 #define IW_INCLUDE_UTIL_FUNCTIONS
 #include "imagew.h"
 
-#define IW_COPYRIGHT_YEAR "2011" "\xe2\x80\x93" "2018"
+#define IW_COPYRIGHT_YEAR "2011" "\xe2\x80\x93" "2021"
 
 #ifdef IW_WINDOWS
 #define IW_INLINE __inline
diff --git a/src/imagew.h b/src/imagew.h
index 4666bfb..cf24cbe 100644
--- a/src/imagew.h
+++ b/src/imagew.h
@@ -37,7 +37,7 @@ extern "C" {
 
 // The version of the IW header files.
 // Use iw_get_version_int() to get the version at runtime.
-#define IW_VERSION_INT           0x010303
+#define IW_VERSION_INT           0x010304
 
 
 //// Codes for use with iw_get_value/iw_set_value.
diff --git a/src/imagew.rc b/src/imagew.rc
index dc1d36a..8d0d780 100644
--- a/src/imagew.rc
+++ b/src/imagew.rc
@@ -13,8 +13,8 @@ LANGUAGE LANG_ENGLISH, SUBLANG_ENGLISH_US
 IWICON  ICON  "resources/imagew.ico"
 
 VS_VERSION_INFO VERSIONINFO
- FILEVERSION 1,3,3,1
- PRODUCTVERSION 1,3,3,1
+ FILEVERSION 1,3,4,1
+ PRODUCTVERSION 1,3,4,1
  FILEFLAGSMASK 0x3fL
 #ifdef _DEBUG
  FILEFLAGS 0x1L
@@ -32,14 +32,14 @@ BEGIN
             VALUE "Comments", "\0"
             VALUE "CompanyName", "Jason Summers\0"
             VALUE "FileDescription", "ImageWorsener\0"
-            VALUE "FileVersion", "1, 3, 3, 1\0"
+            VALUE "FileVersion", "1, 3, 4, 1\0"
             VALUE "InternalName", "imagew\0"
-            VALUE "LegalCopyright", "Copyright (c) 2011-2018 Jason Summers\0"
+            VALUE "LegalCopyright", "Copyright (c) 2011-2021 Jason Summers\0"
             VALUE "LegalTrademarks", "\0"
             VALUE "OriginalFilename", "imagew.exe\0"
             VALUE "PrivateBuild", "\0"
             VALUE "ProductName", "ImageWorsener\0"
-            VALUE "ProductVersion", "1, 3, 3, 1\0"
+            VALUE "ProductVersion", "1, 3, 4, 1\0"
             VALUE "SpecialBuild", "\0"
         END
     END