diff --git a/.travis.yml b/.travis.yml
index c8b6287..4da042a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -19,6 +19,8 @@ env:
   - PHPUNIT_VERSION=~7.2.0
   - PHPUNIT_VERSION=~7.3.0
   - PHPUNIT_VERSION=~7.4.0
+  - PHPUNIT_VERSION=~7.5.0
+  - PHPUNIT_VERSION=~8.0.0
 
 php:
   - 7.3
@@ -30,8 +32,16 @@ php:
 matrix:
   fast_finish: true
   exclude:
+    - php: 7.1
+      env: PHPUNIT_VERSION=dev-master
+    - php: 7.1
+      env: PHPUNIT_VERSION=~8.0.0
     - php: 7
       env: PHPUNIT_VERSION=dev-master
+    - php: 7
+      env: PHPUNIT_VERSION=~8.0.0
+    - php: 7
+      env: PHPUNIT_VERSION=~7.5.0
     - php: 7
       env: PHPUNIT_VERSION=~7.4.0
     - php: 7
diff --git a/autoload.php b/autoload.php
index 06fc33b..67c8e93 100644
--- a/autoload.php
+++ b/autoload.php
@@ -28,6 +28,20 @@ class_alias(
     );
 }
 
+if (! class_exists(\PHPUnit\Framework\MockObject\Matcher\MethodName::class)) {
+    class_alias(
+        \PHPUnit_Framework_MockObject_Matcher_MethodName::class,
+        \PHPUnit\Framework\MockObject\Matcher\MethodName::class
+    );
+}
+
+if (! interface_exists(\PHPUnit\Framework\MockObject\Stub\MatcherCollection::class)) {
+    class_alias(
+        \PHPUnit_Framework_MockObject_Stub_MatcherCollection::class,
+        \PHPUnit\Framework\MockObject\Stub\MatcherCollection::class
+    );
+}
+
 if (! class_exists(\PHPUnit\Framework\BaseTestListener::class)) {
     include __DIR__ . '/compatibility/BaseTestListener.php';
     class_alias(
diff --git a/composer.json b/composer.json
index 5a93b9d..cfc2c6a 100644
--- a/composer.json
+++ b/composer.json
@@ -19,7 +19,7 @@
     },
     "require": {
         "php": ">=7",
-        "phpunit/phpunit": "^6 || ^7",
+        "phpunit/phpunit": "^6 || ^7 || ^8",
         "php-mock/php-mock-integration": "^2"
     },
     "archive": {
diff --git a/tests/MockObjectProxyTest.php b/tests/MockObjectProxyTest.php
index 5587d0f..8f28d1c 100644
--- a/tests/MockObjectProxyTest.php
+++ b/tests/MockObjectProxyTest.php
@@ -2,6 +2,8 @@
 
 namespace phpmock\phpunit;
 
+use PHPUnit\Framework\MockObject\Matcher\MethodName;
+use PHPUnit\Framework\MockObject\Stub\MatcherCollection;
 use PHPUnit\Framework\TestCase;
 use phpmock\integration\MockDelegateFunctionBuilder;
 use PHPUnit\Framework\MockObject\Builder\InvocationMocker;
@@ -29,9 +31,11 @@ public function testExpects()
     {
         $matcher = $this->getMockBuilder(Invocation::class)->getMock();
 
-        $invocationMocker = $this->getMockBuilder(InvocationMocker::class)->disableOriginalConstructor()->getMock();
-        $invocationMocker->expects($this->once())->method("method")
-                ->with(MockDelegateFunctionBuilder::METHOD)->willReturn($invocationMocker);
+        $invocationMocker = new InvocationMocker(
+            $this->prophesize(MatcherCollection::class)->reveal(),
+            $this->prophesize(Invocation::class)->reveal(),
+            [MockDelegateFunctionBuilder::METHOD]
+        );
 
         $prophecy = $this->prophesize(MockObject::class);
         $prophecy->expects($matcher)->willReturn($invocationMocker);
@@ -41,6 +45,12 @@ public function testExpects()
 
         $result = $proxy->expects($matcher);
         $this->assertEquals($invocationMocker, $result);
+
+        $this->assertSame(
+            (new MethodName(MockDelegateFunctionBuilder::METHOD))->toString(),
+            ($invocationMocker->getMatcher()->methodNameMatcher
+                ?? $invocationMocker->getMatcher()->getMethodNameMatcher())->toString()
+        );
     }
 
     /**