diff --git a/CHANGELOG.md b/CHANGELOG.md
index 929b236..dcfc0aa 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,12 +4,13 @@ All notable changes to this project will be documented in this file.
 
 The format is based on [Keep a Changelog](https://keepachangelog.com), and this project adheres to [Semantic Versioning](https://semver.org).
 
-## [Unreleased]
+## [3.3.0] - 2020-11-06
 ### Added
 * Explicitly added compatibility with PHP 8
+* Added support for Chronos 2.0
 
 ### Changed
-* *Nothing*
+* Updated to `infection` v0.20
 
 ### Deprecated
 * *Nothing*
diff --git a/composer.json b/composer.json
index 0f61a30..cad9444 100644
--- a/composer.json
+++ b/composer.json
@@ -15,11 +15,11 @@
         "php": "^7.4 || ^8.0",
         "ext-fileinfo": "*",
         "akrabat/ip-address-middleware": "^1.0",
-        "cakephp/chronos": "^1.2",
+        "cakephp/chronos": "^2.0 || ^1.2",
         "doctrine/orm": "^2.7",
         "endroid/qr-code": "^3.6",
         "fig/http-message-util": "^1.1",
-        "guzzlehttp/guzzle": "^7.0 || ^6.5.1",
+        "guzzlehttp/guzzle": "^7.0",
         "laminas/laminas-config": "^3.3",
         "laminas/laminas-diactoros": "^2.1.3",
         "laminas/laminas-inputfilter": "^2.10",
@@ -38,7 +38,7 @@
         "symfony/translation-contracts": "^2.1"
     },
     "require-dev": {
-        "infection/infection": "^0.19.2",
+        "infection/infection": "^0.20.1",
         "laminas/laminas-stratigility": "^3.2",
         "mezzio/mezzio-problem-details": "^1.0",
         "phpspec/prophecy-phpunit": "^2.0",
diff --git a/src/Validation/SluggerFilter.php b/src/Validation/SluggerFilter.php
index 47e0b38..39e1715 100644
--- a/src/Validation/SluggerFilter.php
+++ b/src/Validation/SluggerFilter.php
@@ -28,6 +28,6 @@ public function __construct(?Slugger\SluggerInterface $slugger = null)
      */
     public function filter($value)
     {
-        return is_string($value) ? (string) $this->slugger->slug($value) : $value;
+        return is_string($value) ? $this->slugger->slug($value)->toString() : $value;
     }
 }
diff --git a/test/Util/IpAddressTest.php b/test/Util/IpAddressTest.php
index cdc9196..d5109f7 100644
--- a/test/Util/IpAddressTest.php
+++ b/test/Util/IpAddressTest.php
@@ -10,6 +10,7 @@
 use Shlinkio\Shlink\Common\Util\IpAddress;
 
 use function sprintf;
+use function trim;
 
 class IpAddressTest extends TestCase
 {
@@ -48,11 +49,11 @@ public function validAddressesAreProperlyParsed(
     ): void {
         $address = IpAddress::fromString($validAddress);
 
-        $this->assertEquals($firstOctet, $this->getPropFromIpAddress($address, 'firstOctet'));
-        $this->assertEquals($secondOctet, $this->getPropFromIpAddress($address, 'secondOctet'));
-        $this->assertEquals($thirdOctet, $this->getPropFromIpAddress($address, 'thirdOctet'));
-        $this->assertEquals($fourthOctet, $this->getPropFromIpAddress($address, 'fourthOctet'));
-        $this->assertEquals($validAddress, (string) $address);
+        self::assertEquals($firstOctet, $this->getPropFromIpAddress($address, 'firstOctet'));
+        self::assertEquals($secondOctet, $this->getPropFromIpAddress($address, 'secondOctet'));
+        self::assertEquals($thirdOctet, $this->getPropFromIpAddress($address, 'thirdOctet'));
+        self::assertEquals($fourthOctet, $this->getPropFromIpAddress($address, 'fourthOctet'));
+        self::assertEquals(trim($validAddress), (string) $address);
     }
 
     /**
@@ -67,10 +68,10 @@ public function addressesRemoveLastOctetWhenAnonymized(
     ): void {
         $anonymizedAddress = IpAddress::fromString($validAddress)->getAnonymizedCopy();
 
-        $this->assertEquals($firstOctet, $this->getPropFromIpAddress($anonymizedAddress, 'firstOctet'));
-        $this->assertEquals($secondOctet, $this->getPropFromIpAddress($anonymizedAddress, 'secondOctet'));
-        $this->assertEquals($thirdOctet, $this->getPropFromIpAddress($anonymizedAddress, 'thirdOctet'));
-        $this->assertEquals(0, $this->getPropFromIpAddress($anonymizedAddress, 'fourthOctet'));
+        self::assertEquals($firstOctet, $this->getPropFromIpAddress($anonymizedAddress, 'firstOctet'));
+        self::assertEquals($secondOctet, $this->getPropFromIpAddress($anonymizedAddress, 'secondOctet'));
+        self::assertEquals($thirdOctet, $this->getPropFromIpAddress($anonymizedAddress, 'thirdOctet'));
+        self::assertEquals(0, $this->getPropFromIpAddress($anonymizedAddress, 'fourthOctet'));
     }
 
     public function provideValidAddresses(): iterable
@@ -81,6 +82,7 @@ public function provideValidAddresses(): iterable
         yield ['192.168.1.254', '192', '168', '1', '254'];
         yield ['8.8.8.8', '8', '8', '8', '8'];
         yield ['8.8.4.4', '8', '8', '4', '4'];
+        yield ['  8.8.4.4   ', '8', '8', '4', '4'];
     }
 
     /**
diff --git a/test/Validation/HostAndPortValidatorTest.php b/test/Validation/HostAndPortValidatorTest.php
index ed1f696..bc9732d 100644
--- a/test/Validation/HostAndPortValidatorTest.php
+++ b/test/Validation/HostAndPortValidatorTest.php
@@ -23,8 +23,8 @@ public function failsToValidateWhenProvidedDataIsInvalid(string $value, string $
     {
         $validator = new HostAndPortValidator();
 
-        $this->assertFalse($validator->isValid($value));
-        $this->assertContains($expectedError, array_values($validator->getMessages()));
+        self::assertFalse($validator->isValid($value));
+        self::assertContains($expectedError, array_values($validator->getMessages()));
     }
 
     public function provideInvalidValues(): iterable
@@ -49,7 +49,7 @@ public function provideInvalidValues(): iterable
     public function succeedsWhenProvidingValidValues(string $value): void
     {
         $validator = new HostAndPortValidator();
-        $this->assertTrue($validator->isValid($value));
+        self::assertTrue($validator->isValid($value));
     }
 
     public function provideValidValues(): iterable
@@ -58,6 +58,8 @@ public function provideValidValues(): iterable
         yield ['localhost:3000'];
         yield ['example.com'];
         yield ['example.com:8080'];
+        yield ['example.com:1'];
+        yield ['example.com:65535'];
     }
 
     /**
diff --git a/test/Validation/SluggerFilterTest.php b/test/Validation/SluggerFilterTest.php
index 4d30e66..a557fbe 100644
--- a/test/Validation/SluggerFilterTest.php
+++ b/test/Validation/SluggerFilterTest.php
@@ -35,7 +35,7 @@ public function providedValueIsFilteredAsExpected(?string $providedValue, ?strin
 
         $result = $this->filter->filter($providedValue);
 
-        $this->assertEquals($expectedValue, $result);
+        self::assertEquals($expectedValue, $result);
         $slugify->shouldHaveBeenCalledTimes($expectedValue !== null ? 1 : 0);
     }
 
@@ -53,7 +53,7 @@ public function provideValuesToFilter(): iterable
     public function internalSluggerKeepsCasing(string $providedValue, string $expectedValue): void
     {
         $filter = new SluggerFilter();
-        $this->assertEquals($expectedValue, $filter->filter($providedValue));
+        self::assertEquals($expectedValue, $filter->filter($providedValue));
     }
 
     public function provideValuesToFilterWithCasing(): iterable