diff --git a/CHANGELOG.md b/CHANGELOG.md
index f7e8d74..10a27a2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,13 @@
 PayPal PHP SDK release notes
 ============================
 
+1.9.0
+-----
+* Updated Payouts APIs [#692](https://github.com/paypal/PayPal-PHP-SDK/pull/692).
+* Updated Payment Experience APIs [#682](https://github.com/paypal/PayPal-PHP-SDK/pull/682).
+* Updated Payments API to use Payment Card instead of credit card [#696](https://github.com/paypal/PayPal-PHP-SDK/pull/696).
+* Fixed bug on failed Access token call. [#665](https://github.com/paypal/PayPal-PHP-SDK/pull/665).
+
 1.8.0
 -----
 * Updated Webhooks APIs [#653](https://github.com/paypal/PayPal-PHP-SDK/pull/653).
diff --git a/lib/PayPal/Core/PayPalConstants.php b/lib/PayPal/Core/PayPalConstants.php
index 9011710..9c3a8a7 100644
--- a/lib/PayPal/Core/PayPalConstants.php
+++ b/lib/PayPal/Core/PayPalConstants.php
@@ -12,7 +12,7 @@ class PayPalConstants
 {
 
     const SDK_NAME = 'PayPal-PHP-SDK';
-    const SDK_VERSION = '1.8.0';
+    const SDK_VERSION = '1.9.0';
 
     /**
      * Approval URL for Payment