diff --git a/composer.json b/composer.json
index d2abdf5c..79a8b691 100644
--- a/composer.json
+++ b/composer.json
@@ -25,8 +25,8 @@
         ]
     },
     "require-dev": {
-        "phpunit/phpunit": "*",
+        "phpunit/phpunit": ">=8",
         "php-mock/php-mock-phpunit": "*",
-        "mockery/mockery": "*"
+        "mockery/mockery": ">=1.4"
     }
 }
diff --git a/tests/smsTwilioTest.php b/tests/smsTwilioTest.php
index 81b8231f..75f8dd3b 100644
--- a/tests/smsTwilioTest.php
+++ b/tests/smsTwilioTest.php
@@ -21,7 +21,7 @@ public function test_send_sms_by_api_twilio(): void
 
         $mock_init = $this->getFunctionMock("smsapi", "curl_init");
         $mock_init->expects($this->any())->willReturnCallback(
-            function ($ch) {
+            function () {
                 $ch = array();
                 return $ch;
             }
@@ -105,7 +105,7 @@ public function test_send_sms_by_api_twilio_lookup_first(): void
 
         $mock_init = $this->getFunctionMock("smsapi", "curl_init");
         $mock_init->expects($this->any())->willReturnCallback(
-            function ($ch) {
+            function () {
                 $ch = array();
                 return $ch;
             }