+# ChangeLog v4
+
+## 4.0.0beta1
+
+* PHP 8 compatibility
+ - Drop ext-propro support:
+ PHP 8 removes the object get/set API from the ZendEngine, which renders
+ that extension dysfunctional. As a consequence, the header property of
+ http\Message and derived classes cannot be modified in place, and thus
+ by reference.
+