diff --git a/CMakeLists.txt b/CMakeLists.txt
index d3ffcb55..64c199da 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -155,7 +155,7 @@ if(NOT is_multi_config AND NOT CMAKE_BUILD_TYPE)
 endif()
 
 # CMake init
-project(upx VERSION 4.2.1 LANGUAGES C CXX)
+project(upx VERSION 4.3.0 LANGUAGES C CXX)
 
 # set the default multi-config build type to "Release"
 if(is_multi_config)
diff --git a/NEWS b/NEWS
index 1ed609ea..ccbbca7a 100644
--- a/NEWS
+++ b/NEWS
@@ -2,6 +2,9 @@
 User visible changes for UPX
 ==================================================================
 
+Changes in 4.3.0 (XX XXX XXXX):
+  * bug fixes - see https://github.com/upx/upx/milestone/15
+
 Changes in 4.2.1 (01 Nov 2023):
   * linux: /proc/self/exe now is optional
   * windows: use SetFileTime to preserve sub-second file timestamps
diff --git a/doc/upx.1 b/doc/upx.1
index 8259675a..49d42fe9 100644
--- a/doc/upx.1
+++ b/doc/upx.1
@@ -133,7 +133,7 @@
 .\" ========================================================================
 .\"
 .IX Title "UPX 1"
-.TH UPX 1 "2023-11-01" "upx 4.2.1" " "
+.TH UPX 1 "2023-11-02" "upx 4.3.0" " "
 .\" For nroff, turn off justification.  Always turn off hyphenation; it makes
 .\" way too many mistakes in technical documents.
 .if n .ad l
diff --git a/src/version.h b/src/version.h
index a86493fc..1f6940b8 100644
--- a/src/version.h
+++ b/src/version.h
@@ -1,7 +1,7 @@
 #pragma once
-#define UPX_VERSION_HEX      0x040201 /* 04.02.01 */
-#define UPX_VERSION_STRING   "4.2.1"
-#define UPX_VERSION_STRING4  "4.21"
-#define UPX_VERSION_DATE     "Nov 1st 2023"
-#define UPX_VERSION_DATE_ISO "2023-11-01"
+#define UPX_VERSION_HEX      0x040300 /* 04.03.00 */
+#define UPX_VERSION_STRING   "4.3.0"
+#define UPX_VERSION_STRING4  "4.30"
+#define UPX_VERSION_DATE     "Nov 2nd 2023"
+#define UPX_VERSION_DATE_ISO "2023-11-02"
 #define UPX_VERSION_YEAR     "2023"