diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4e185f4..2ef35a1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,19 @@
 
 All notable changes to `redsys-php` will be documented in this file.
 
+## 3.0.0 - 2024-06-xx
+
+### New features:
+- POST requests responses are now handled by the package. 
+
+### Breaking changes
+- Renamed exceptions: All the exceptions have been renamed to include the `*Exception` suffix.
+- Renamed `RedsysNotification` as `RedsysResponse`.
+- POST requests responses returns `NotificationParameters` or a `PostRequestError`.
+
+### Low impact changes
+- Drop spatie/data-transfer-object dependency
+
 ## 2.0.1 - 2023-05-16
 
 Fixes tests compatibility
diff --git a/UPGRADING.md b/UPGRADING.md
index 5d94ece..4fb0d73 100644
--- a/UPGRADING.md
+++ b/UPGRADING.md
@@ -1,5 +1,12 @@
 # Upgrading
 
+## From v2 to v3
+
+Version 3.x now handles responses for POST requests and some classes are renamed to accommodate that:
+
+- Renamed `RedsysNotification` as `RedsysResponse`.
+- Renamed exceptions: All the exceptions have been renamed to include the `*Exception` suffix and replaced `RedsysNotification` as `RedsysResponse`.
+
 ## From v1 to v2
 
 Version 2.x is a complete rewrite, so there isn't a step-by-step upgrade guide. We recommend you to read the updated docs