diff --git a/README.md b/README.md
index 64182da..f0da5ca 100644
--- a/README.md
+++ b/README.md
@@ -21,7 +21,7 @@ Minimum requirements
 	V8 is written in C++ and is used in Google Chrome, the open source browser from Google.
 	V8 implements ECMAScript as specified in ECMA-262, 5th edition.
 
-	This extension requires V8 7.5 or higher.
+	This extension requires V8 9.0 or higher.
 
     V8 releases are published rather quickly and the V8 team usually provides security support
     for the version line shipped with the Chrome browser (stable channel) and newer (only).
diff --git a/config.m4 b/config.m4
index 44918de..bb823f4 100644
--- a/config.m4
+++ b/config.m4
@@ -140,8 +140,8 @@ int main ()
     set $ac_cv_v8_version
     IFS=$ac_IFS
     V8_API_VERSION=`expr [$]1 \* 1000000 + [$]2 \* 1000 + [$]3`
-    if test "$V8_API_VERSION" -lt 7005000 ; then
-       AC_MSG_ERROR([libv8 must be version 7.5 or greater])
+    if test "$V8_API_VERSION" -lt 9000000 ; then
+       AC_MSG_ERROR([libv8 must be version 9.0 or greater])
     fi
     AC_DEFINE_UNQUOTED([PHP_V8_API_VERSION], $V8_API_VERSION, [ ])
     AC_DEFINE_UNQUOTED([PHP_V8_VERSION], "$ac_cv_v8_version", [ ])
diff --git a/v8js_class.cc b/v8js_class.cc
index 4e9be67..b8af58b 100644
--- a/v8js_class.cc
+++ b/v8js_class.cc
@@ -636,7 +636,7 @@ static void v8js_compile_script(zval *this_ptr, const zend_string *str, const ze
 	v8::Local<v8::String> sname = identifier
 		? V8JS_ZSTR(identifier)
 		: V8JS_SYM("V8Js::compileString()");
-	v8::ScriptOrigin origin(sname);
+	v8::ScriptOrigin origin(isolate, sname);
 
 	if (ZSTR_LEN(str) > std::numeric_limits<int>::max()) {
 		zend_throw_exception(php_ce_v8js_exception,
diff --git a/v8js_methods.cc b/v8js_methods.cc
index 7f7f926..7ddfcf8 100644
--- a/v8js_methods.cc
+++ b/v8js_methods.cc
@@ -516,7 +516,7 @@ V8JS_METHOD(require)
 
 	// Set script identifier
 	v8::Local<v8::String> sname = V8JS_STR(normalised_module_id);
-	v8::ScriptOrigin origin(sname);
+	v8::ScriptOrigin origin(isolate, sname);
 
 	if (Z_STRLEN(module_code) > std::numeric_limits<int>::max()) {
 		zend_throw_exception(php_ce_v8js_exception,