diff --git a/.scrutinizer.yml b/.scrutinizer.yml
index 1a7b472..925a7d2 100644
--- a/.scrutinizer.yml
+++ b/.scrutinizer.yml
@@ -3,7 +3,7 @@ inherit: true
 build:
     environment:
         php:
-            version: 7.2
+            version: 7.4
     tests:
         override:
             - make test
diff --git a/.travis.yml b/.travis.yml
index 79d3e51..8acb904 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,11 +1,11 @@
 language: php
 matrix:
   include:
-  - php: 7.2
-    env: EXECUTE_DEPLOYMENT=true
   - php: 7.3
-    env: deps=low
+    env: EXECUTE_DEPLOYMENT=true
   - php: 7.4
+  - php: 7.4
+    env: deps=low
   fast_finish: true
 before_install:
 - phpenv config-rm xdebug.ini || echo "XDebug is not enabled"
diff --git a/Makefile b/Makefile
index bc6a906..c01fd98 100644
--- a/Makefile
+++ b/Makefile
@@ -75,7 +75,7 @@ package: tools/box
 
 	cd build/phar && \
 	  composer remove phpunit/phpunit --no-update && \
-	  composer config platform.php 7.2 && \
+	  composer config platform.php 7.3 && \
 	  composer update --no-dev -o -a
 
 	tools/box compile
@@ -97,16 +97,16 @@ tools/deptrac:
 	curl -Ls http://get.sensiolabs.de/deptrac.phar -o tools/deptrac && chmod +x tools/deptrac
 
 tools/infection: tools/infection.pubkey
-	curl -Ls https://github.com/infection/infection/releases/download/0.13.2/infection.phar -o tools/infection && chmod +x tools/infection
+	curl -Ls https://github.com/infection/infection/releases/download/0.16.1/infection.phar -o tools/infection && chmod +x tools/infection
 
 tools/infection.pubkey:
-	curl -Ls https://github.com/infection/infection/releases/download/0.13.2/infection.phar.pubkey -o tools/infection.pubkey
+	curl -Ls https://github.com/infection/infection/releases/download/0.16.1/infection.phar.pubkey -o tools/infection.pubkey
 
 tools/box:
 	curl -Ls https://github.com/humbug/box/releases/download/3.8.4/box.phar -o tools/box && chmod +x tools/box
 
 tests/phar/tools/phpunit:
-	curl -Ls https://phar.phpunit.de/phpunit-8.phar -o tests/phar/tools/phpunit && chmod +x tests/phar/tools/phpunit
+	curl -Ls https://phar.phpunit.de/phpunit-9.phar -o tests/phar/tools/phpunit && chmod +x tests/phar/tools/phpunit
 
 tests/phar/tools/phpunit.d/zalas-phpunit-doubles-extension.phar: build/zalas-phpunit-doubles-extension.phar
 	cp build/zalas-phpunit-doubles-extension.phar tests/phar/tools/phpunit.d/zalas-phpunit-doubles-extension.phar
diff --git a/composer.json b/composer.json
index a378fe7..9d11438 100644
--- a/composer.json
+++ b/composer.json
@@ -3,11 +3,12 @@
     "description": "Initialises test doubles in PHPUnit test cases for you",
     "type": "library",
     "require": {
-        "php": "^7.2,<8.0",
-        "phpunit/phpunit": "^8.5 || ^9.0",
+        "php": "^7.3,<8.0",
+        "phpunit/phpunit": "^9.1",
         "phpdocumentor/reflection-docblock": "^4.0.1"
     },
     "require-dev": {
+        "phpspec/prophecy-phpunit": "dev-master"
     },
     "autoload": {
         "psr-4": {
diff --git a/manifest.xml.in b/manifest.xml.in
index 7fccb8a..dfd4202 100644
--- a/manifest.xml.in
+++ b/manifest.xml.in
@@ -10,6 +10,6 @@
     </copyright>
 
     <requires>
-        <php version="^7.2"/>
+        <php version="^7.3"/>
     </requires>
 </phar>
diff --git a/tests/TestCase/TestDoubles/Inheritance/InheritanceTest.php b/tests/TestCase/TestDoubles/Inheritance/InheritanceTest.php
index 7775bf7..ab5bdd7 100644
--- a/tests/TestCase/TestDoubles/Inheritance/InheritanceTest.php
+++ b/tests/TestCase/TestDoubles/Inheritance/InheritanceTest.php
@@ -3,6 +3,7 @@
 
 namespace Zalas\PHPUnit\Doubles\Tests\TestCase\TestDoubles\Inheritance;
 
+use Prophecy\PhpUnit\ProphecyTrait;
 use Prophecy\Prophecy\ObjectProphecy;
 use Zalas\PHPUnit\Doubles\TestCase\TestDoubles;
 use Zalas\PHPUnit\Doubles\Tests\TestCase\TestDoubles\Fixtures\Fred;
@@ -10,6 +11,7 @@
 
 class InheritanceTest extends BaseTestCase
 {
+    use ProphecyTrait;
     use TestDoubles;
     use PropertyTrait;
 
diff --git a/tests/TestCase/TestDoubles/MissingType/ProphecyTest.php b/tests/TestCase/TestDoubles/MissingType/ProphecyTest.php
index 90b856e..ce820a1 100644
--- a/tests/TestCase/TestDoubles/MissingType/ProphecyTest.php
+++ b/tests/TestCase/TestDoubles/MissingType/ProphecyTest.php
@@ -4,11 +4,13 @@
 namespace Zalas\PHPUnit\Doubles\Tests\TestCase\TestDoubles\MissingType;
 
 use PHPUnit\Framework\TestCase;
+use Prophecy\PhpUnit\ProphecyTrait;
 use Prophecy\Prophecy\ObjectProphecy;
 use Zalas\PHPUnit\Doubles\TestCase\TestDoubles;
 
 class ProphecyTest extends TestCase
 {
+    use ProphecyTrait;
     use TestDoubles;
 
     /**
diff --git a/tests/TestCase/TestDoubles/NotNull/ProphecyTest.php b/tests/TestCase/TestDoubles/NotNull/ProphecyTest.php
index e2806cd..32bf29c 100644
--- a/tests/TestCase/TestDoubles/NotNull/ProphecyTest.php
+++ b/tests/TestCase/TestDoubles/NotNull/ProphecyTest.php
@@ -4,6 +4,7 @@
 namespace Zalas\PHPUnit\Doubles\Tests\TestCase\TestDoubles\NotNull;
 
 use PHPUnit\Framework\TestCase;
+use Prophecy\PhpUnit\ProphecyTrait;
 use Prophecy\Prophecy\ObjectProphecy;
 use Zalas\PHPUnit\Doubles\TestCase\TestDoubles;
 use Zalas\PHPUnit\Doubles\Tests\TestCase\TestDoubles\Fixtures\Copper;
@@ -12,6 +13,7 @@
 
 class ProphecyTest extends TestCase
 {
+    use ProphecyTrait;
     use TestDoubles;
 
     /**
diff --git a/tests/TestCase/TestDoubles/ProphecyTest.php b/tests/TestCase/TestDoubles/ProphecyTest.php
index 7535089..5b8653a 100644
--- a/tests/TestCase/TestDoubles/ProphecyTest.php
+++ b/tests/TestCase/TestDoubles/ProphecyTest.php
@@ -4,6 +4,7 @@
 namespace Zalas\PHPUnit\Doubles\Tests\TestCase\TestDoubles;
 
 use PHPUnit\Framework\TestCase;
+use Prophecy\PhpUnit\ProphecyTrait;
 use Prophecy\Prophecy\ObjectProphecy;
 use Zalas\PHPUnit\Doubles\TestCase\TestDoubles;
 use Zalas\PHPUnit\Doubles\Tests\TestCase\TestDoubles\Fixtures\Copper;
@@ -16,6 +17,7 @@
 
 class ProphecyTest extends TestCase
 {
+    use ProphecyTrait;
     use TestDoubles;
 
     /**