diff --git a/docs/Aggregation/Pipeline/ExtendedStatsBucket.md b/docs/Aggregation/Pipeline/ExtendedStatsBucket.md
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+# Extended Stats Bucket Aggregation
+
+> More info about extended stats bucket aggregation is in the [official elasticsearch docs][1]
+
+This aggregation provides a few more statistics (sum of squares, standard deviation, etc) compared to the stats_bucket` aggregation.
+
+## Simple example
+
+```JSON
+{
+    "aggs" : {
+        "sales_per_month" : {
+            "date_histogram" : {
+                "field" : "date",
+                "interval" : "month"
+            },
+            "aggs": {
+                "sales": {
+                    "sum": {
+                        "field": "price"
+                    }
+                }
+            }
+        },
+        "stats_monthly_sales": {
+            "extended_stats_bucket": {
+                "buckets_paths": "sales_per_month>sales" 
+            }
+        }
+    }
+}
+```
+
+And now the query via DSL:
+
+```php
+$search = new Search();
+
+$dateAggregation = new DateHistogramAggregation('sales_per_month', 'date', 'month');
+$dateAggregation->addAggregation(
+    new SumAggregation('sales', 'price')
+);
+
+$search->addAggregation($dateAggregation);
+$search->addAggregation(
+    new ExtendedStatsBucketAggregation('stats_monthly_sales', 'sales_per_month>sales')
+);
+
+$aggArray = $search->toArray();
+```
+
+[1]: https://www.elastic.co/guide/en/elasticsearch/reference/current/search-aggregations-pipeline-extended-stats-bucket-aggregation.html
\ No newline at end of file
diff --git a/src/Aggregation/Pipeline/ExtendedStatsBucketAggregation.php b/src/Aggregation/Pipeline/ExtendedStatsBucketAggregation.php
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+<?php
+
+/*
+ * This file is part of the ONGR package.
+ *
+ * (c) NFQ Technologies UAB <info@nfq.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace ONGR\ElasticsearchDSL\Aggregation\Pipeline;
+
+/**
+ * Class representing Extended Stats Bucket Pipeline Aggregation.
+ *
+ * @link https://goo.gl/rn8vtA
+ */
+class ExtendedStatsBucketAggregation extends AbstractPipelineAggregation
+{
+    /**
+     * {@inheritdoc}
+     */
+    public function getType()
+    {
+        return 'extended_stats_bucket';
+    }
+}
diff --git a/tests/Aggregation/Pipeline/ExtendedStatsBucketAggregationTest.php b/tests/Aggregation/Pipeline/ExtendedStatsBucketAggregationTest.php
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+<?php
+
+/*
+ * This file is part of the ONGR package.
+ *
+ * (c) NFQ Technologies UAB <info@nfq.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace ONGR\ElasticsearchDSL\Tests\Aggregation\Pipeline;
+
+use ONGR\ElasticsearchDSL\Aggregation\Pipeline\ExtendedStatsBucketAggregation;
+
+/**
+ * Unit test for stats bucket aggregation.
+ */
+class ExtendedStatsBucketAggregationTest extends \PHPUnit_Framework_TestCase
+{
+    /**
+     * Tests toArray method.
+     */
+    public function testToArray()
+    {
+        $aggregation = new ExtendedStatsBucketAggregation('acme', 'test');
+
+        $expected = [
+            'extended_stats_bucket' => [
+                'buckets_path' => 'test',
+            ],
+        ];
+
+        $this->assertEquals($expected, $aggregation->toArray());
+    }
+}