diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1c33a9c..e8f15f7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,10 @@ All notable changes to this project will be documented in this file.
 
 The format is based on [Keep a Changelog](http://keepachangelog.com/) and this project adheres to [Semantic Versioning](http://semver.org/).
 
+## 2.1.3
+### Fixed
+- Fixed an issue where updating the shipping state did not refresh the cached order. [#27](https://github.com/surprisehighway/craft-avatax/issues/27)
+
 ## 2.1.2
 ### Fixed
 - Skip address validation for estimated addresses to avoid errors with incomplete addresses. [#22](https://github.com/surprisehighway/craft-avatax/issues/22)
diff --git a/composer.json b/composer.json
index 689ff4e..2adae7b 100644
--- a/composer.json
+++ b/composer.json
@@ -2,7 +2,7 @@
     "name": "surprisehighway/craft-avatax",
     "description": "Calculate and add sales tax to an order's base tax using Avalara's Avatax service.",
     "type": "craft-plugin",
-    "version": "2.1.2",
+    "version": "2.1.3",
     "keywords": [
         "craft",
         "cms",
diff --git a/src/services/SalesTaxService.php b/src/services/SalesTaxService.php
index 6124e56..916936c 100644
--- a/src/services/SalesTaxService.php
+++ b/src/services/SalesTaxService.php
@@ -746,9 +746,10 @@ private function getOrderSignature(Order $order)
         $address1 = $order->shippingAddress->address1;
         $address2 = $order->shippingAddress->address2;
         $city = $order->shippingAddress->city;
+        $state = $this->getState($order->shippingAddress);
         $zipCode = $order->shippingAddress->zipCode;
         $country = $this->getCountry($order->shippingAddress);
-        $address = $address1.$address2.$city.$zipCode.$country;
+        $address = $address1.$address2.$city.$state.$zipCode.$country;
 
         $lineItems = '';
         foreach ($order->lineItems as $lineItem)