diff --git a/.travis.yml b/.travis.yml
index 7c9388b..c33efb6 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,7 +5,7 @@ dist: trusty
 sudo: false
 
 php:
-    - 7.1
+    - 7.3.5
 
 cache:
     directories:
@@ -23,4 +23,4 @@ script:
     - export SYMFONY_PHPUNIT_VERSION=5.7.1
     - export SYMFONY_PHPUNIT_REMOVE="symfony/yaml"
     - export SYMFONY_DEPRECATIONS_HELPER=strict
-    - vendor/phpunit/phpunit/phpunit --verbose
\ No newline at end of file
+    - vendor/phpunit/phpunit/phpunit --verbose
diff --git a/composer.json b/composer.json
index 8c029d7..95b2247 100644
--- a/composer.json
+++ b/composer.json
@@ -9,12 +9,12 @@
     }
   ],
   "require": {
-    "php": "^7.1",
+    "php": "^7.2.5",
     "api-platform/core": "^2.1",
     "doctrine/orm": "^2.4.5",
-    "doctrine/doctrine-bundle": "^1.6",
-    "symfony/translation": "^4.2",
-    "symfony/dependency-injection": "^3.4"
+    "doctrine/doctrine-bundle": "^1.6 || ^2.0",
+    "symfony/translation": "*",
+    "symfony/dependency-injection": "*"
   },
   "require-dev": {
     "phpunit/phpunit": "^7.3"
diff --git a/src/Translation/Translator.php b/src/Translation/Translator.php
index 574060f..cc3df89 100644
--- a/src/Translation/Translator.php
+++ b/src/Translation/Translator.php
@@ -5,7 +5,7 @@
 namespace Locastic\ApiPlatformTranslationBundle\Translation;
 
 use Symfony\Component\HttpFoundation\RequestStack;
-use Symfony\Component\Translation\TranslatorInterface;
+use Symfony\Contracts\Translation\TranslatorInterface;
 
 /**
  * Class Translator
@@ -55,18 +55,6 @@ public function trans($id, array $parameters = array(), $domain = null, $locale
         return $this->translator->trans($id, $parameters, $domain, $locale);
     }
 
-    /**
-     * {@inheritdoc}
-     */
-    public function transChoice($id, $number, array $parameters = array(), $domain = null, $locale = null): string
-    {
-        if (!$locale) {
-            $locale = $this->loadCurrentLocale();
-        }
-
-        return $this->translator->transChoice($id, $number, $parameters, $domain, $locale);
-    }
-
     /**
      * @return string
      */
diff --git a/tests/EventListener/AssignLocaleListenerTest.php b/tests/EventListener/AssignLocaleListenerTest.php
index 2675dc6..790057e 100644
--- a/tests/EventListener/AssignLocaleListenerTest.php
+++ b/tests/EventListener/AssignLocaleListenerTest.php
@@ -106,7 +106,7 @@ private function loadCurrentLocale()
     /**
      * {@inheritdoc}
      */
-    protected function setUp()
+    protected function setUp(): void
     {
         $this->translator = $this->createMock(Translator::class);
         $this->defaultLocale = 'en';
diff --git a/tests/Translation/TranslatorTest.php b/tests/Translation/TranslatorTest.php
index 2b51352..d04eee6 100644
--- a/tests/Translation/TranslatorTest.php
+++ b/tests/Translation/TranslatorTest.php
@@ -9,7 +9,7 @@
 use Symfony\Component\HttpFoundation\ParameterBag;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpFoundation\RequestStack;
-use Symfony\Component\Translation\TranslatorInterface;
+use Symfony\Contracts\Translation\TranslatorInterface;
 
 /**
  * Class TranslatorTest
@@ -37,7 +37,7 @@ class TranslatorTest extends TestCase
     /**
      * {@inheritdoc}
      */
-    protected function setUp()
+    protected function setUp(): void
     {
         $this->defaultLocale = 'en';
         $this->translator = $this->createMock(TranslatorInterface::class);