diff --git a/composer.json b/composer.json
index b797318..d58be2b 100644
--- a/composer.json
+++ b/composer.json
@@ -19,7 +19,7 @@
     },
     "require": {
         "php": ">=5.3",
-        "react/event-loop": "~0.4.0|~0.3.0",
+        "react/event-loop": "^0.4 || ^0.3.5",
         "react/promise": "~2.1|~1.2"
     }
 }
diff --git a/tests/FunctionRejectTest.php b/tests/FunctionRejectTest.php
index 1ecf319..6153fcc 100644
--- a/tests/FunctionRejectTest.php
+++ b/tests/FunctionRejectTest.php
@@ -13,6 +13,13 @@ public function testPromiseIsPendingWithoutRunningLoop()
         $this->expectPromisePending($promise);
     }
 
+    public function testPromiseExpiredIsPendingWithoutRunningLoop()
+    {
+        $promise = Timer\reject(-1, $this->loop);
+
+        $this->expectPromisePending($promise);
+    }
+
     public function testPromiseWillBeRejectedOnTimeout()
     {
         $promise = Timer\reject(0.01, $this->loop);
@@ -22,6 +29,15 @@ public function testPromiseWillBeRejectedOnTimeout()
         $this->expectPromiseRejected($promise);
     }
 
+    public function testPromiseExpiredWillBeRejectedOnTimeout()
+    {
+        $promise = Timer\reject(-1, $this->loop);
+
+        $this->loop->run();
+
+        $this->expectPromiseRejected($promise);
+    }
+
     public function testCancelingPromiseWillRejectTimer()
     {
         $promise = Timer\reject(0.01, $this->loop);
diff --git a/tests/FunctionResolveTest.php b/tests/FunctionResolveTest.php
index 8f1b2af..63b70f4 100644
--- a/tests/FunctionResolveTest.php
+++ b/tests/FunctionResolveTest.php
@@ -13,6 +13,13 @@ public function testPromiseIsPendingWithoutRunningLoop()
         $this->expectPromisePending($promise);
     }
 
+    public function testPromiseExpiredIsPendingWithoutRunningLoop()
+    {
+        $promise = Timer\resolve(-1, $this->loop);
+
+        $this->expectPromisePending($promise);
+    }
+
     public function testPromiseWillBeResolvedOnTimeout()
     {
         $promise = Timer\resolve(0.01, $this->loop);
@@ -22,6 +29,15 @@ public function testPromiseWillBeResolvedOnTimeout()
         $this->expectPromiseResolved($promise);
     }
 
+    public function testPromiseExpiredWillBeResolvedOnTimeout()
+    {
+        $promise = Timer\resolve(-1, $this->loop);
+
+        $this->loop->run();
+
+        $this->expectPromiseResolved($promise);
+    }
+
     public function testWillStartLoopTimer()
     {
         $loop = $this->getMock('React\EventLoop\LoopInterface');
diff --git a/tests/FunctionTimeoutTest.php b/tests/FunctionTimeoutTest.php
index bd3d49c..cc8dcd8 100644
--- a/tests/FunctionTimeoutTest.php
+++ b/tests/FunctionTimeoutTest.php
@@ -16,6 +16,15 @@ public function testResolvedWillResolveRightAway()
         $this->expectPromiseResolved($promise);
     }
 
+    public function testResolvedExpiredWillResolveRightAway()
+    {
+        $promise = Promise\resolve();
+
+        $promise = Timer\timeout($promise, -1, $this->loop);
+
+        $this->expectPromiseResolved($promise);
+    }
+
     public function testResolvedWillNotStartTimer()
     {
         $promise = Promise\resolve();