diff --git a/src/phpFastCache/Helper/Psr16Adapter.php b/src/phpFastCache/Helper/Psr16Adapter.php
index 85448d25c..4d79cd984 100644
--- a/src/phpFastCache/Helper/Psr16Adapter.php
+++ b/src/phpFastCache/Helper/Psr16Adapter.php
@@ -124,6 +124,9 @@ public function clear()
      */
     public function getMultiple($keys, $default = null)
     {
+        if ($keys instanceof \Traversable) {
+            $keys = \iterator_to_array($keys);
+        }
         try {
             return array_map(function (ExtendedCacheItemInterface $item) {
                 return $item->get();
@@ -167,7 +170,13 @@ public function setMultiple($values, $ttl = null)
     public function deleteMultiple($keys)
     {
         try {
-            return $this->internalCacheInstance->deleteItems($keys);
+            if ($keys instanceof \Traversable) {
+                return $this->internalCacheInstance->deleteItems(\iterator_to_array($keys));
+            } elseif (is_array($keys)) {
+                return $this->internalCacheInstance->deleteItems($keys);
+            } else {
+                throw new phpFastCacheInvalidArgumentException('$keys must be an array/Traversable instance.');
+            }
         } catch (phpFastCacheInvalidArgumentException $e) {
             throw new phpFastCacheSimpleCacheException($e->getMessage(), null, $e);
         }
diff --git a/tests/Psr16Adapter.test.php b/tests/Psr16Adapter.test.php
index c4e4d7215..957b05681 100644
--- a/tests/Psr16Adapter.test.php
+++ b/tests/Psr16Adapter.test.php
@@ -18,27 +18,27 @@
 $value = str_shuffle(uniqid('pfc', true));
 
 if(!$Psr16Adapter->has('test-key')){
-    $testHelper->printPassText('1/6 Psr16 hasser returned expected boolean (false)');
+    $testHelper->printPassText('1/9 Psr16 hasser returned expected boolean (false)');
 }else{
-    $testHelper->printFailText('1/6 Psr16 hasser returned unexpected boolean (true)');
+    $testHelper->printFailText('1/9 Psr16 hasser returned unexpected boolean (true)');
 }
 
 $testHelper->printNewLine()->printText('Setting up value to "test-key"...')->printNewLine();
 $Psr16Adapter->set('test-key', $value);
 
 if($Psr16Adapter->get('test-key') === $value){
-    $testHelper->printPassText('2/6 Psr16 getter returned expected value: ' . $value);
+    $testHelper->printPassText('2/9 Psr16 getter returned expected value: ' . $value);
 }else{
-    $testHelper->printFailText('2/6 Psr16 getter returned unexpected value: ' . $value);
+    $testHelper->printFailText('2/9 Psr16 getter returned unexpected value: ' . $value);
 }
 
 $testHelper->printNewLine()->printText('Deleting key "test-key"...')->printNewLine();
 $Psr16Adapter->delete('test-key');
 
 if(!$Psr16Adapter->has('test-key')){
-    $testHelper->printPassText('3/6 Psr16 hasser returned expected boolean (false)');
+    $testHelper->printPassText('3/9 Psr16 hasser returned expected boolean (false)');
 }else{
-    $testHelper->printFailText('3/6 Psr16 hasser returned unexpected boolean (true)');
+    $testHelper->printFailText('3/9 Psr16 hasser returned unexpected boolean (true)');
 }
 
 $testHelper->printNewLine()->printText('Setting up value to "test-key, test-key2, test-key3"...')->printNewLine();
@@ -51,9 +51,16 @@
 
 $values = $Psr16Adapter->getMultiple(['test-key', 'test-key2', 'test-key3']);
 if(count(array_filter($values)) === 3){
-    $testHelper->printPassText('4/6 Psr16 multiple getters returned expected values (3)');
+    $testHelper->printPassText('4/9 Psr16 multiple getters returned expected values (3)');
 }else{
-    $testHelper->printFailText('4/6 Psr16 getters(3) returned unexpected values.');
+    $testHelper->printFailText('4/9 Psr16 getters(3) returned unexpected values.');
+}
+
+$values = $Psr16Adapter->getMultiple(new ArrayObject(['test-key', 'test-key2', 'test-key3']));
+if(count(array_filter($values)) === 3){
+    $testHelper->printPassText('5/9 Psr16 multiple getters with Traversable returned expected values (3)');
+}else{
+    $testHelper->printFailText('5/9 Psr16 getters(3) with Traversable returned unexpected values.');
 }
 
 $testHelper->printNewLine()->printText('Clearing whole cache ...')->printNewLine();
@@ -67,18 +74,53 @@
 ]);
 
 if($Psr16Adapter->has('test-key') && $Psr16Adapter->has('test-key2') && $Psr16Adapter->has('test-key3')){
-    $testHelper->printPassText('5/6 Psr16 hasser returned expected booleans (true)');
+    $testHelper->printPassText('6/9 Psr16 hasser returned expected booleans (true)');
+}else{
+    $testHelper->printFailText('6/9 Psr16 hasser returned one or more unexpected boolean (false)');
+}
+
+$testHelper->printNewLine()->printText('Clearing whole cache ...')->printNewLine();
+$Psr16Adapter->clear();
+
+$testHelper->printText('Setting multiple values using a Traversable to "test-key, test-key2, test-key3"...')->printNewLine();
+$Psr16Adapter->setMultiple(new ArrayObject([
+  'test-key' => $value,
+  'test-key2' => $value,
+  'test-key3' => $value
+]));
+
+if($Psr16Adapter->has('test-key') && $Psr16Adapter->has('test-key2') && $Psr16Adapter->has('test-key3')){
+    $testHelper->printPassText('7/9 Psr16 hasser returned expected booleans (true)');
 }else{
-    $testHelper->printFailText('5/6 Psr16 hasser returned one or more unexpected boolean (false)');
+    $testHelper->printFailText('7/9 Psr16 hasser returned one or more unexpected boolean (false)');
 }
 
 $testHelper->printNewLine()->printText('Deleting up keys "test-key, test-key2, test-key3"...')->printNewLine();
 $Psr16Adapter->deleteMultiple(['test-key', 'test-key2', 'test-key3']);
 
 if(!$Psr16Adapter->has('test-key') && !$Psr16Adapter->has('test-key2') && !$Psr16Adapter->has('test-key3')){
-    $testHelper->printPassText('6/6 Psr16 hasser returned expected booleans (false)');
+    $testHelper->printPassText('8/9 Psr16 hasser returned expected booleans (false)');
 }else{
-    $testHelper->printFailText('6/6 Psr16 hasser returned one or more unexpected boolean (true)');
+    $testHelper->printFailText('8/9 Psr16 hasser returned one or more unexpected boolean (true)');
+}
+
+$testHelper->printNewLine()->printText('Clearing whole cache ...')->printNewLine();
+$Psr16Adapter->clear();
+$testHelper->printText('Setting up value to "test-key, test-key2, test-key3"...')->printNewLine();
+$Psr16Adapter->setMultiple([
+    'test-key' => $value,
+    'test-key2' => $value,
+    'test-key3' => $value,
+]);
+
+$testHelper->printText('Deleting up keys "test-key, test-key2, test-key3"... from a Traversable')->printNewLine();
+$traversable = new ArrayObject(['test-key', 'test-key2', 'test-key3']);
+$Psr16Adapter->deleteMultiple($traversable);
+
+if (!$Psr16Adapter->has('test-key') && !$Psr16Adapter->has('test-key2') && !$Psr16Adapter->has('test-key3')) {
+    $testHelper->printPassText('9/9 Psr16 hasser returned expected booleans (false)');
+} else {
+    $testHelper->printFailText('9/9 Psr16 hasser returned one or more unexpected boolean (true)');
 }
 
-$testHelper->terminateTest();
\ No newline at end of file
+$testHelper->terminateTest();