diff --git a/Controller/Adminhtml/Region/Delete.php b/Controller/Adminhtml/Region/Delete.php
index 78a1f1d..92afdb7 100644
--- a/Controller/Adminhtml/Region/Delete.php
+++ b/Controller/Adminhtml/Region/Delete.php
@@ -36,17 +36,17 @@ public function execute()
                 $model->load($region_id);
                 $region_name = $model->getDefaultName();
                 $model->delete();
-                $this->messageManager->addSuccess(__('The '.$region_name.' Region has been deleted.'));
+                $this->messageManager->addSuccessMessage(__('The '.$region_name.' Region has been deleted.'));
                 return $resultRedirect->setPath('*/*/');
             } catch (\Exception $e) {
                 // display error message
-                $this->messageManager->addError($e->getMessage());
+                $this->messageManager->addErrorMessage($e->getMessage());
                 // go back to edit form
                 return $resultRedirect->setPath('*/*/edit', ['region_id' => $region_id]);
             }
         }
         // display error message
-        $this->messageManager->addError(__('Region to delete was not found.'));
+        $this->messageManager->addErrorMessage(__('Region to delete was not found.'));
         // go to grid
         return $resultRedirect->setPath('*/*/');
     }
diff --git a/Controller/Adminhtml/Region/Edit.php b/Controller/Adminhtml/Region/Edit.php
index c8906f4..2b95244 100644
--- a/Controller/Adminhtml/Region/Edit.php
+++ b/Controller/Adminhtml/Region/Edit.php
@@ -78,7 +78,7 @@ public function execute()
         if ($id && $id > 0) {
             $model->load($id);
             if (!$model->getRegionId()) {
-                $this->messageManager->addError(__('This region no longer exists.'));
+                $this->messageManager->addErrorMessage(__('This region no longer exists.'));
                 /** \Magento\Backend\Model\View\Result\Redirect $resultRedirect */
                 $resultRedirect = $this->resultRedirectFactory->create();
                 return $resultRedirect->setPath('*/*/');
diff --git a/Controller/Adminhtml/Region/MassDelete.php b/Controller/Adminhtml/Region/MassDelete.php
index 928e9b1..1f53b54 100644
--- a/Controller/Adminhtml/Region/MassDelete.php
+++ b/Controller/Adminhtml/Region/MassDelete.php
@@ -60,7 +60,7 @@ public function execute()
             $page->delete();
         }
 
-        $this->messageManager->addSuccess(__('A total of %1 record(s) have been deleted.', $collectionSize));
+        $this->messageManager->addSuccessMessage(__('A total of %1 record(s) have been deleted.', $collectionSize));
 
         /** @var \Magento\Backend\Model\View\Result\Redirect $resultRedirect */
         $resultRedirect = $this->resultFactory->create(ResultFactory::TYPE_REDIRECT);
diff --git a/Controller/Adminhtml/Region/Save.php b/Controller/Adminhtml/Region/Save.php
index 7fa17c8..0625457 100644
--- a/Controller/Adminhtml/Region/Save.php
+++ b/Controller/Adminhtml/Region/Save.php
@@ -54,7 +54,7 @@ public function execute()
             /** @var \PHPCuong\Region\Model\Region $model */
             $model = $this->_objectManager->create('PHPCuong\Region\Model\Region')->load($id);
             if (!$model->getRegionId() && $id) {
-                $this->messageManager->addError(__('This region no longer exists.'));
+                $this->messageManager->addErrorMessage(__('This region no longer exists.'));
                 return $resultRedirect->setPath('*/*/');
             }
 
@@ -62,16 +62,16 @@ public function execute()
 
             try {
                 $model->save();
-                $this->messageManager->addSuccess(__('You saved the region.'));
+                $this->messageManager->addSuccessMessage(__('You saved the region.'));
 
                 if ($this->getRequest()->getParam('back')) {
                     return $resultRedirect->setPath('*/*/edit', ['region_id' => $model->getRegionId()]);
                 }
                 return $resultRedirect->setPath('*/*/');
             } catch (LocalizedException $e) {
-                $this->messageManager->addError($e->getMessage());
+                $this->messageManager->addErrorMessage($e->getMessage());
             } catch (\Exception $e) {
-                $this->messageManager->addException($e, __('Something went wrong while saving the region.'));
+                $this->messageManager->addExceptionMessage($e, __('Something went wrong while saving the region.'));
             }
 
             $this->_getSession()->setFormData($data);
diff --git a/composer.json b/composer.json
index 9869780..ca6cb0d 100644
--- a/composer.json
+++ b/composer.json
@@ -10,12 +10,11 @@
         "Manage regions in magento2 addresses"
     ],
     "require": {
-        "php": "~5.6.0|7.0.2|7.0.4|~7.0.6|~7.1.0",
-        "magento/module-backend": "100.0.*|100.1.*|100.2.*",
-        "magento/framework": "100.0.*|100.1.*|101.0.*"
+        "magento/module-backend": "100.0.*|100.1.*|100.2.*|^101.0",
+        "magento/framework": "100.0.*|100.1.*|101.0.*|^102.0"
     },
     "type": "magento2-module",
-    "version": "2.2.1",
+    "version": "2.3.0",
     "license": [
         "OSL-3.0",
         "AFL-3.0"