diff --git a/composer.json b/composer.json
index 927a178..39ccf2c 100644
--- a/composer.json
+++ b/composer.json
@@ -12,11 +12,12 @@
     ],
     "require": {
         "php": ">=5.3",
-        "react/stream": "~0.4.3",
+        "react/stream": "^0.5 || ~0.4.3",
         "clue/stream-filter": "~1.3"
     },
     "require-dev": {
-        "react/event-loop": "~0.4.0|~0.3.0"
+        "react/event-loop": "~0.4.0|~0.3.0",
+        "phpunit/phpunit": "^5.0"
     },
     "suggest": {
         "ext-zlib": "Requires ext-zlib extension"
diff --git a/tests/bootstrap.php b/tests/bootstrap.php
index 73b4462..3de4425 100644
--- a/tests/bootstrap.php
+++ b/tests/bootstrap.php
@@ -42,7 +42,7 @@ protected function expectCallableNever()
      */
     protected function createCallableMock()
     {
-        return $this->getMock('CallableStub');
+        return $this->createMock('CallableStub');
     }
 }