diff --git a/.circleci/config.yml b/.circleci/config.yml
index 304c67e..c7148a4 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -81,7 +81,7 @@ workflows:
             - tests-phpunit:
                   matrix:
                       parameters:
-                          php-version: ['7.1', '7.2', '7.3', '7.4', '8.0']
+                          php-version: ['7.2', '7.3', '7.4', '8.0']
             - release:
                   requires: [tests-phpunit]
                   filters:
diff --git a/.phpunit.result.cache b/.phpunit.result.cache
index b80bfb3..7e95d92 100644
--- a/.phpunit.result.cache
+++ b/.phpunit.result.cache
@@ -1 +1 @@
-{"version":1,"defects":{"SensioLabs\\Insight\\Sdk\\Tests\\ApiTest::testConstructorWithoutOption":6,"SensioLabs\\Insight\\Sdk\\Tests\\ParserTest::testParseErrorsFailedIfDocumentIfInvalid with data set #0":6,"SensioLabs\\Insight\\Sdk\\Tests\\ParserTest::testParseErrorsFailedIfDocumentIfInvalid with data set #1":6,"SensioLabs\\Insight\\Sdk\\Tests\\ParserTest::testParseErrorsFailedIfDocumentIfInvalid with data set #2":6},"times":{"SensioLabs\\Insight\\Sdk\\Tests\\ApiTest::testConstructorWithoutOption":0.007,"SensioLabs\\Insight\\Sdk\\Tests\\ApiTest::testGetProjects":0.021,"SensioLabs\\Insight\\Sdk\\Tests\\ApiTest::testGetProjectsWithPage":0.004,"SensioLabs\\Insight\\Sdk\\Tests\\ApiTest::testGetProject":0.008,"SensioLabs\\Insight\\Sdk\\Tests\\ApiTest::testCreateProjectOk":0.008,"SensioLabs\\Insight\\Sdk\\Tests\\ApiTest::testCreateProjectNOk":0.001,"SensioLabs\\Insight\\Sdk\\Tests\\ApiTest::testupdateProjectOk":0.008,"SensioLabs\\Insight\\Sdk\\Tests\\ApiTest::testupdateProjectNOk":0.001,"SensioLabs\\Insight\\Sdk\\Tests\\ApiTest::testGetAnalyses":0.002,"SensioLabs\\Insight\\Sdk\\Tests\\ApiTest::testGetAnalysis":0.007,"SensioLabs\\Insight\\Sdk\\Tests\\ApiTest::testGetAnalysisStatus":0.002,"SensioLabs\\Insight\\Sdk\\Tests\\ApiTest::testAnalyze":0.008,"SensioLabs\\Insight\\Tests\\Sdk\\Model\\ViolationsTest::testCount":0,"SensioLabs\\Insight\\Tests\\Sdk\\Model\\ViolationsTest::testIterable":0,"SensioLabs\\Insight\\Sdk\\Tests\\ParserTest::testParseErrorsFailedIfDocumentIfInvalid with data set #0":0,"SensioLabs\\Insight\\Sdk\\Tests\\ParserTest::testParseErrorsFailedIfDocumentIfInvalid with data set #1":0,"SensioLabs\\Insight\\Sdk\\Tests\\ParserTest::testParseErrorsFailedIfDocumentIfInvalid with data set #2":0.001,"SensioLabs\\Insight\\Sdk\\Tests\\ParserTest::testParseErrors":0}}
\ No newline at end of file
+{"version":1,"defects":{"SensioLabs\\Insight\\Sdk\\Tests\\ApiTest::testConstructorWithoutOption":6,"SensioLabs\\Insight\\Sdk\\Tests\\ParserTest::testParseErrorsFailedIfDocumentIfInvalid with data set #0":6,"SensioLabs\\Insight\\Sdk\\Tests\\ParserTest::testParseErrorsFailedIfDocumentIfInvalid with data set #1":6,"SensioLabs\\Insight\\Sdk\\Tests\\ParserTest::testParseErrorsFailedIfDocumentIfInvalid with data set #2":6,"SensioLabs\\Insight\\Sdk\\Tests\\ApiTest::testGetProjects":4,"SensioLabs\\Insight\\Sdk\\Tests\\ApiTest::testGetProjectsWithPage":4,"SensioLabs\\Insight\\Sdk\\Tests\\ApiTest::testGetProject":4,"SensioLabs\\Insight\\Sdk\\Tests\\ApiTest::testCreateProjectOk":4,"SensioLabs\\Insight\\Sdk\\Tests\\ApiTest::testCreateProjectNOk":4,"SensioLabs\\Insight\\Sdk\\Tests\\ApiTest::testupdateProjectOk":4,"SensioLabs\\Insight\\Sdk\\Tests\\ApiTest::testupdateProjectNOk":4,"SensioLabs\\Insight\\Sdk\\Tests\\ApiTest::testGetAnalyses":4,"SensioLabs\\Insight\\Sdk\\Tests\\ApiTest::testGetAnalysis":4,"SensioLabs\\Insight\\Sdk\\Tests\\ApiTest::testGetAnalysisStatus":4,"SensioLabs\\Insight\\Sdk\\Tests\\ApiTest::testAnalyze":4},"times":{"SensioLabs\\Insight\\Sdk\\Tests\\ApiTest::testConstructorWithoutOption":0.005,"SensioLabs\\Insight\\Sdk\\Tests\\ApiTest::testGetProjects":0.026,"SensioLabs\\Insight\\Sdk\\Tests\\ApiTest::testGetProjectsWithPage":0.006,"SensioLabs\\Insight\\Sdk\\Tests\\ApiTest::testGetProject":0.183,"SensioLabs\\Insight\\Sdk\\Tests\\ApiTest::testCreateProjectOk":0.185,"SensioLabs\\Insight\\Sdk\\Tests\\ApiTest::testCreateProjectNOk":0.001,"SensioLabs\\Insight\\Sdk\\Tests\\ApiTest::testupdateProjectOk":0.184,"SensioLabs\\Insight\\Sdk\\Tests\\ApiTest::testupdateProjectNOk":0.001,"SensioLabs\\Insight\\Sdk\\Tests\\ApiTest::testGetAnalyses":0.004,"SensioLabs\\Insight\\Sdk\\Tests\\ApiTest::testGetAnalysis":0.163,"SensioLabs\\Insight\\Sdk\\Tests\\ApiTest::testGetAnalysisStatus":0.004,"SensioLabs\\Insight\\Sdk\\Tests\\ApiTest::testAnalyze":0.164,"SensioLabs\\Insight\\Tests\\Sdk\\Model\\ViolationsTest::testCount":0,"SensioLabs\\Insight\\Tests\\Sdk\\Model\\ViolationsTest::testIterable":0,"SensioLabs\\Insight\\Sdk\\Tests\\ParserTest::testParseErrorsFailedIfDocumentIfInvalid with data set #0":0,"SensioLabs\\Insight\\Sdk\\Tests\\ParserTest::testParseErrorsFailedIfDocumentIfInvalid with data set #1":0,"SensioLabs\\Insight\\Sdk\\Tests\\ParserTest::testParseErrorsFailedIfDocumentIfInvalid with data set #2":0,"SensioLabs\\Insight\\Sdk\\Tests\\ParserTest::testParseErrors":0}}
\ No newline at end of file
diff --git a/Sdk/Tests/ApiTest.php b/Sdk/Tests/ApiTest.php
index a565707..c9d4a5c 100644
--- a/Sdk/Tests/ApiTest.php
+++ b/Sdk/Tests/ApiTest.php
@@ -30,13 +30,11 @@ protected function setUp(): void
         $this->logger = $this->getMockBuilder('Psr\Log\LoggerInterface')->getMock();
     }
 
-    /**
-     * @expectedException \Exception
-     * @expectedExceptionMessage Config is missing the following keys: api_token, user_uuid
-     */
     public function testConstructorWithoutOption()
     {
-        $api = new Api();
+        $this->expectException(\Exception::class);
+        $this->expectExceptionMessage('Config is missing the following keys: api_token, user_uuid');
+        new Api();
     }
 
     public function testGetProjects()
diff --git a/Sdk/Tests/ParserTest.php b/Sdk/Tests/ParserTest.php
index 96619ba..d65d3a6 100644
--- a/Sdk/Tests/ParserTest.php
+++ b/Sdk/Tests/ParserTest.php
@@ -12,6 +12,7 @@
 namespace SensioLabs\Insight\Sdk\Tests;
 
 use PHPUnit\Framework\TestCase;
+use SensioLabs\Insight\Sdk\Exception\ApiParserException;
 use SensioLabs\Insight\Sdk\Parser;
 
 class ParserTest extends TestCase
@@ -36,13 +37,13 @@ public function getParseErrorsFailedIfDocumentIfInvalidTests()
     }
 
     /**
-     * @expectedException \SensioLabs\Insight\Sdk\Exception\ApiParserException
-     * @expectedExceptionMessage Could not transform this xml to a \DOMDocument instance.
      * @dataProvider getParseErrorsFailedIfDocumentIfInvalidTests
      */
     public function testParseErrorsFailedIfDocumentIfInvalid($xml)
     {
-        $error = $this->parser->parseError($xml);
+        $this->expectException(ApiParserException::class);
+        $this->expectExceptionMessage('Could not transform this xml to a \DOMDocument instance.');
+        $this->parser->parseError($xml);
     }
 
     public function testParseErrors()
diff --git a/composer.json b/composer.json
index de9d52a..76abedd 100644
--- a/composer.json
+++ b/composer.json
@@ -3,9 +3,9 @@
     "description": "SymfonyInsight SDK",
     "license": "MIT",
     "require": {
-        "php": ">=7.1",
+        "php": ">=7.2",
         "ext-json": "*",
-        "jms/serializer": "0.12.*",
+        "jms/serializer": "^3.17",
         "psr/log": "^1.0",
         "symfony/http-client": "^4.4",
         "symfony/console": "^4.4",