diff --git a/composer.json b/composer.json
index a4d5f8e..4c2d584 100644
--- a/composer.json
+++ b/composer.json
@@ -1,6 +1,6 @@
 {
 	"name": "mage2pro/2checkout"
-	,"version": "1.5.12"
+	,"version": "1.6.0"
 	,"description": "2Checkout integration with Magento 2"
 	,"type": "magento2-module"
 	,"homepage": "https://mage2.pro/c/extensions/2checkout"
@@ -11,7 +11,7 @@
 		"homepage": "https://mage2.pro/users/dmitry_fedyuk",
 		"role": "Developer"
 	}]
-	,"require": {"mage2pro/core": ">=3.3.18", "2checkout/2checkout-php": "*"}
+	,"require": {"mage2pro/core": ">=3.4.1", "2checkout/2checkout-php": "*"}
 	,"autoload": {"files": ["registration.php"], "psr-4": {"Dfe\\TwoCheckout\\": ""}}
 	,"keywords": [
 		"2Checkout"
diff --git a/etc/config.xml b/etc/config.xml
index 9bfec5f..242930d 100644
--- a/etc/config.xml
+++ b/etc/config.xml
@@ -15,6 +15,13 @@
 		</df_payment>
         <payment>
             <dfe_two_checkout>
+<!-- 2017-12-05
+"The module is not shown in the «Mageplaza Extensions» → «One Step Checkout» →
+«General Configuration» → «Default Payment Method» Magento 2 backend dropdown":
+https://github.com/mage2pro/2checkout/issues/2
+https://github.com/mage2pro/stripe/blob/2.5.2/etc/config.xml#L52-L120
+-->
+				<active>1</active>
 <!-- 2017-07-24
 @used-by \Magento\Payment\Helper\Data::getMethodModelConfigName():
 	protected function getMethodModelConfigName($code) {