diff --git a/NEWS b/NEWS
index 8395fff0825..b1c85e2dd04 100644
--- a/NEWS
+++ b/NEWS
@@ -1,6 +1,6 @@
 PHP                                                                        NEWS
 |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
-?? ??? ????, PHP 8.3.9
+20 Jun 2024, PHP 8.3.9
 
 - Core:
   . Fixed bug GH-14315 (Incompatible pointer type warnings). (Peter Kokot)
diff --git a/Zend/zend.h b/Zend/zend.h
index 1727b91b193..9f1c624373c 100644
--- a/Zend/zend.h
+++ b/Zend/zend.h
@@ -20,7 +20,7 @@
 #ifndef ZEND_H
 #define ZEND_H
 
-#define ZEND_VERSION "4.3.9-dev"
+#define ZEND_VERSION "4.3.9RC1"
 
 #define ZEND_ENGINE_3
 
diff --git a/configure.ac b/configure.ac
index 6a23c1424eb..ed78b0d75b0 100644
--- a/configure.ac
+++ b/configure.ac
@@ -17,7 +17,7 @@ dnl Basic autoconf initialization, generation of config.nice.
 dnl ----------------------------------------------------------------------------
 
 AC_PREREQ([2.68])
-AC_INIT([PHP],[8.3.9-dev],[https://github.com/php/php-src/issues],[php],[https://www.php.net])
+AC_INIT([PHP],[8.3.9RC1],[https://github.com/php/php-src/issues],[php],[https://www.php.net])
 AC_CONFIG_SRCDIR([main/php_version.h])
 AC_CONFIG_AUX_DIR([build])
 AC_PRESERVE_HELP_ORDER
diff --git a/main/php_version.h b/main/php_version.h
index 1ba99e780ae..b85fcff4518 100644
--- a/main/php_version.h
+++ b/main/php_version.h
@@ -3,6 +3,6 @@
 #define PHP_MAJOR_VERSION 8
 #define PHP_MINOR_VERSION 3
 #define PHP_RELEASE_VERSION 9
-#define PHP_EXTRA_VERSION "-dev"
-#define PHP_VERSION "8.3.9-dev"
+#define PHP_EXTRA_VERSION "RC1"
+#define PHP_VERSION "8.3.9RC1"
 #define PHP_VERSION_ID 80309