diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8b20faf..1af9be1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,10 @@ This projects adheres to [Semantic Versioning](http://semver.org/) and [Keep a C
 ## [Unreleased][unreleased]
 -
 
+## [4.1.1] - 2022-05-30
+### Fixed
+- Fix possible "Warning: Invalid argument supplied for foreach()" with incomplete config.
+
 ## [4.1.0] - 2022-04-11
 - No longer use global core mode.
 - No longer catch exceptions, should be handled downstream.
@@ -82,8 +86,9 @@ This projects adheres to [Semantic Versioning](http://semver.org/) and [Keep a C
 ## 1.0.0 - 2015-01-19
 - First release.
 
-[unreleased]: https://github.com/pronamic/wp-pronamic-pay-multisafepay/compare/4.1.0...HEAD
-[4.0.1]: https://github.com/pronamic/wp-pronamic-pay-multisafepay/compare/4.0.1...4.1.0
+[unreleased]: https://github.com/pronamic/wp-pronamic-pay-multisafepay/compare/4.1.1...HEAD
+[4.1.1]: https://github.com/pronamic/wp-pronamic-pay-multisafepay/compare/4.1.0...4.1.1
+[4.1.0]: https://github.com/pronamic/wp-pronamic-pay-multisafepay/compare/4.0.1...4.1.0
 [4.0.1]: https://github.com/pronamic/wp-pronamic-pay-multisafepay/compare/4.0.0...4.0.1
 [4.0.0]: https://github.com/wp-pay-gateways/multisafepay/compare/3.0.0...4.0.0
 [3.0.0]: https://github.com/wp-pay-gateways/multisafepay/compare/2.1.3...3.0.0
diff --git a/composer.json b/composer.json
index a67a569..05ce95a 100644
--- a/composer.json
+++ b/composer.json
@@ -29,7 +29,13 @@
 		}
 	},
 	"config": {
-		"sort-packages": true
+		"sort-packages": true,
+		"allow-plugins": {
+			"composer/installers": true,
+			"dealerdirect/phpcodesniffer-composer-installer": true,
+			"roots/wordpress-core-installer": true,
+			"bamarni/composer-bin-plugin": true
+		}
 	},
 	"require": {
 		"php": ">=5.6.20",
diff --git a/package.json b/package.json
index 7cb9643..2261ca1 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "multisafepay",
-  "version": "4.1.0",
+  "version": "4.1.1",
   "description": "MultiSafepay driver for the WordPress payment processing library.",
   "repository": {
     "type": "git",
diff --git a/src/XML/GatewaysResponseMessage.php b/src/XML/GatewaysResponseMessage.php
index 20e42e6..5143a8b 100644
--- a/src/XML/GatewaysResponseMessage.php
+++ b/src/XML/GatewaysResponseMessage.php
@@ -34,11 +34,13 @@ public static function parse( SimpleXMLElement $xml ) {
 
 		$message->gateways = array();
 
-		foreach ( $xml->gateways->gateway as $gateway ) {
-			$id          = Security::filter( $gateway->id );
-			$description = Security::filter( $gateway->description );
+		if ( \is_array( $xml->gateways->gateway ) ) {
+			foreach ( $xml->gateways->gateway as $gateway ) {
+				$id          = Security::filter( $gateway->id );
+				$description = Security::filter( $gateway->description );
 
-			$message->gateways[ $id ] = $description;
+				$message->gateways[ $id ] = $description;
+			}
 		}
 
 		return $message;