diff --git a/.travis.yml b/.travis.yml
index 68f0d13..3fdb8c4 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,7 +1,6 @@
 language: php
 
 php:
-  - 7.1
   - 7.2
   - 7.3
 
diff --git a/composer.json b/composer.json
index b35c756..0c8ecec 100644
--- a/composer.json
+++ b/composer.json
@@ -12,10 +12,10 @@
     }
   ],
   "require": {
-    "php": ">=7.1"
+    "php": ">=7.2"
   },
   "require-dev": {
-    "phpunit/phpunit": "^7"
+    "phpunit/phpunit": "^8"
   },
   "autoload": {
     "psr-4": {
diff --git a/tests/BankDbTest.php b/tests/BankDbTest.php
index 1e4b75f..7867476 100644
--- a/tests/BankDbTest.php
+++ b/tests/BankDbTest.php
@@ -12,7 +12,7 @@ class BankDbTest extends TestCase
      */
     protected $bank_db;
 
-    protected function setUp()
+    protected function setUp(): void
     {
         $this->bank_db = new BankDb();
     }
diff --git a/tests/BankInfoTest.php b/tests/BankInfoTest.php
index aa2122d..9cd7adc 100644
--- a/tests/BankInfoTest.php
+++ b/tests/BankInfoTest.php
@@ -17,7 +17,7 @@ class BankInfoTest extends TestCase
      */
     protected $valid_prefix = '428906';
 
-    protected function setUp()
+    protected function setUp(): void
     {
         $this->bank_db = new BankDb();
     }