diff --git a/Zend/zend.h b/Zend/zend.h
index 5918691c279..05a43d27791 100644
--- a/Zend/zend.h
+++ b/Zend/zend.h
@@ -20,7 +20,7 @@
 #ifndef ZEND_H
 #define ZEND_H
 
-#define ZEND_VERSION "3.4.0-dev"
+#define ZEND_VERSION "4.0.0-dev"
 
 #define ZEND_ENGINE_3
 
diff --git a/configure.ac b/configure.ac
index 2da7776e53c..1ed2839b0b0 100644
--- a/configure.ac
+++ b/configure.ac
@@ -109,8 +109,8 @@ extern "C++" {
 #endif /* PHP_CONFIG_H */
 ])
 
-PHP_MAJOR_VERSION=7
-PHP_MINOR_VERSION=4
+PHP_MAJOR_VERSION=8
+PHP_MINOR_VERSION=0
 PHP_RELEASE_VERSION=0
 PHP_EXTRA_VERSION="-dev"
 PHP_VERSION="$PHP_MAJOR_VERSION.$PHP_MINOR_VERSION.$PHP_RELEASE_VERSION$PHP_EXTRA_VERSION"
diff --git a/main/php_version.h b/main/php_version.h
index 6f2f3c032d4..24765617cbe 100644
--- a/main/php_version.h
+++ b/main/php_version.h
@@ -1,8 +1,8 @@
 /* automatically generated by configure */
 /* edit configure.ac to change version number */
-#define PHP_MAJOR_VERSION 7
-#define PHP_MINOR_VERSION 4
+#define PHP_MAJOR_VERSION 8
+#define PHP_MINOR_VERSION 0
 #define PHP_RELEASE_VERSION 0
 #define PHP_EXTRA_VERSION "-dev"
-#define PHP_VERSION "7.4.0-dev"
-#define PHP_VERSION_ID 70400
+#define PHP_VERSION "8.0.0-dev"
+#define PHP_VERSION_ID 80000