diff --git a/README.md b/README.md
index e059aff..35eda11 100644
--- a/README.md
+++ b/README.md
@@ -3,7 +3,8 @@
 
 Targets to provide simple means for obtaining data from Prometheus API.
 
-Stable for [Prometheus 1.x and <= v2.0 api spec](https://prometheus.io/docs/prometheus/2.0/querying/api/)
+Stable for [Prometheus 1.x and <= v2.1 api spec](https://prometheus.io/docs/prometheus/2.1/querying/api/)
+NOTICE: some endpoints are only available in newer versions of Prometheus. For detailed list see [table of available calls](#available-calls) below.
 
 ## Instalation
 Use composer to add PApi as dependency:
@@ -43,15 +44,15 @@ Use composer to add PApi as dependency:
     
 ### Available calls
 PApi currently has methods for all available endpoints provided by Prometheus.
-#### Query
-    $client->getQuery('up', new \DateTimeImmutable('now');
-#### QueryRange
-    $client->getQueryRange('up', new \DateTimeImmutable('today'), new \DateTimeImmutable('now'), '12h');
-#### Series
-    $client->getSeries(['up'], new \DateTimeImmutable('-1 minute'), new \DateTimeImmutable('now'));
-#### Label Values
-    $client->getLabelValues('job');
-#### Targets (active only)
-    $client->getTargets();
-#### Alert Managers
-    $client->getAlertManagers();
+
+| Call                  | Code                                                                                                   | Prometheus compatibility | Official doc                                                                                     |
+| --------------------- | ------------------------------------------------------------------------------------------------------ | ------------------------ | ------------------------------------------------------------------------------------------------ |
+| Query                 | `$client->getQuery('up', new \DateTimeImmutable('now');`                                               | >=1.0                    | [doc](https://prometheus.io/docs/prometheus/2.1/querying/api/#instant-queries)                  |
+| QueryRange            | `$client->getQueryRange('up', new \DateTimeImmutable('today'), new \DateTimeImmutable('now'), '12h');` | >=1.0                    | [doc](https://prometheus.io/docs/prometheus/2.1/querying/api/#range-queries)                    |
+| Series                | `$client->getSeries(['up'], new \DateTimeImmutable('-1 minute'), new \DateTimeImmutable('now');`      | >=1.0                    | [doc](https://prometheus.io/docs/prometheus/2.1/querying/api/#finding-series-by-label-matchers) |
+| Label Values          | `$client->getLabelValues('job');`                                                                      | >=1.0                    | [doc](https://prometheus.io/docs/prometheus/2.1/querying/api/#querying-label-values)            |
+| Targets (active only) | `$client->getTargets();`                                                                               | >=1.0                    | [doc](https://prometheus.io/docs/prometheus/2.1/querying/api/#targets)                          |
+| Alert Managers        | `$client->getAlertManagers();`                                                                         | >=1.0                    | [doc](https://prometheus.io/docs/prometheus/2.1/querying/api/#alertmanagers)                    |
+| Create snapshot       | `$client->createSnapshot();`                                                                           | >=2.1                    | [doc](https://prometheus.io/docs/prometheus/2.1/querying/api/#snapshot)                         |
+| Delete series         | `$client->deleteSeries(['up'], new DateTimeImmutable('today'), new DateTimeImmutable('now');`         | >=2.1                    | [doc](https://prometheus.io/docs/prometheus/2.1/querying/api/#delete-series)                    |
+| Clean tombstones      | `$client->cleanTombstones();`                                                                          | >=2.1                    | [doc](https://prometheus.io/docs/prometheus/2.1/querying/api/#clean-tombstones)                 |
diff --git a/composer.json b/composer.json
index c21e2d6..f72b8f0 100644
--- a/composer.json
+++ b/composer.json
@@ -12,6 +12,7 @@
   },
   "require-dev": {
     "cdn77/coding-standard": "^0.5",
+    "guzzlehttp/guzzle": "^6.3",
     "phpstan/phpstan": "^0.9",
     "phpstan/phpstan-strict-rules": "^0.9",
     "phpunit/phpunit": "^6.3",
diff --git a/src/Client.php b/src/Client.php
index ac799a2..77503d9 100644
--- a/src/Client.php
+++ b/src/Client.php
@@ -48,18 +48,18 @@ public function connect() : void
 
     public function getAlertManagers() : DataResponse
     {
-        return DataResponseMeta::fromJson($this->connection->execute('alertmanagers'));
+        return DataResponseMeta::fromJson($this->connection->executeGet('alertmanagers'));
     }
 
     public function getTargets() : DataResponse
     {
-        return DataResponseMeta::fromJson($this->connection->execute('targets'));
+        return DataResponseMeta::fromJson($this->connection->executeGet('targets'));
     }
 
     public function getLabelValues(string $label) : ArrayValuesResponse
     {
         return ArrayValuesResponseMeta::fromJson(
-            $this->connection->execute('label/' . urlencode($label) . '/values')
+            $this->connection->executeGet('label/' . urlencode($label) . '/values')
         );
     }
 
@@ -69,7 +69,7 @@ public function getLabelValues(string $label) : ArrayValuesResponse
     public function getSeries(array $match, \DateTimeInterface $start, \DateTimeInterface $end) : ArrayValuesResponse
     {
         return ArrayValuesResponseMeta::fromJson(
-            $this->connection->execute('series', [
+            $this->connection->executeGet('series', [
                 'match' => array_values($match),
                 'start' => $start->format(self::DATETIME_FORMAT),
                 'end' => $end->format(self::DATETIME_FORMAT),
@@ -89,7 +89,7 @@ public function getQueryRange(
         }
 
         return DataResponseMeta::fromJson(
-            $this->connection->execute('query_range', [
+            $this->connection->executeGet('query_range', [
                 'query' => $query,
                 'start' => $start->format(self::DATETIME_FORMAT),
                 'end' => $end->format(self::DATETIME_FORMAT),
@@ -109,11 +109,42 @@ public function getQuery(
         }
 
         return DataResponseMeta::fromJson(
-            $this->connection->execute('query', [
+            $this->connection->executeGet('query', [
                 'query' => $query,
                 'time' => $time->format(self::DATETIME_FORMAT),
                 'timeout' => $timeout,
             ])
         );
     }
+
+    /**
+     * Make sure to enable admin APIs via `--web.enable-admin-api`
+     */
+    public function createSnapshot() : DataResponse
+    {
+        return DataResponseMeta::fromJson($this->connection->executePost('admin/tsdb/snapshot'));
+    }
+
+    /**
+     * Make sure to enable admin APIs via `--web.enable-admin-api`
+     * @param string[] $match
+     */
+    public function deleteSeries(array $match, \DateTimeInterface $start, \DateTimeInterface $end) : bool
+    {
+        $this->connection->executePost('admin/tsdb/delete_series', [
+            'match' => array_values($match),
+            'start' => $start->format(self::DATETIME_FORMAT),
+            'end' => $end->format(self::DATETIME_FORMAT),
+        ]);
+        return true;
+    }
+
+    /**
+     * Make sure to enable admin APIs via `--web.enable-admin-api`
+     */
+    public function cleanTombstones() : bool
+    {
+        $this->connection->executePost('admin/tsdb/clean_tombstones');
+        return true;
+    }
 }
diff --git a/src/Connection/ConnectionInterface.php b/src/Connection/ConnectionInterface.php
index b368932..ef1a615 100644
--- a/src/Connection/ConnectionInterface.php
+++ b/src/Connection/ConnectionInterface.php
@@ -19,5 +19,10 @@ public function create(array $config) : self;
     /**
      * @param mixed[] $query
      */
-    public function execute(string $endPoint, array $query = []) : string;
+    public function executeGet(string $endPoint, array $query = []) : string;
+
+    /**
+     * @param mixed[] $query
+     */
+    public function executePost(string $endPoint, array $query = []) : string;
 }
diff --git a/src/Connection/CurlConnection.php b/src/Connection/CurlConnection.php
index a3f8f2f..ced282a 100644
--- a/src/Connection/CurlConnection.php
+++ b/src/Connection/CurlConnection.php
@@ -34,27 +34,38 @@ public function create(array $config) : ConnectionInterface
     /**
      * @param mixed[] $query
      */
-    public function execute(string $endPoint, array $query = []) : string
+    public function executeGet(string $endPoint, array $query = []) : string
     {
         if ($this->connection === null) {
             $this->connect();
         }
-        curl_reset($this->connection);
+        $url = $this->prepareConnection($endPoint, $query);
 
-        $queryParameters = http_build_query($query);
-        $queryString = preg_replace('/%5B(?:[0-9]|[1-9][0-9]+)%5D=/', '%5B%5D=', $queryParameters);
-        $uriParts = $this->getBaseUriParts();
-        $uriParts['path'] .= $endPoint;
-        $uriParts['query'] = $queryString;
-        $url = $this->buildUrl($uriParts);
+        $response = curl_exec($this->connection);
+        if ($response === false) {
+            throw new ConnectionException(
+                sprintf(
+                    'Request GET %s returned with code %d and message `%s`',
+                    $url,
+                    curl_getinfo($this->connection, CURLINFO_RESPONSE_CODE),
+                    curl_error($this->connection)
+                )
+            );
+        }
 
-        curl_setopt($this->connection, CURLOPT_URL, $url);
-        curl_setopt($this->connection, CURLOPT_TIMEOUT, $this->config['timeout']);
-        curl_setopt($this->connection, CURLOPT_RETURNTRANSFER, true);
-        $curlHeaders = array_map(function ($key, $value) {
-            return $key . ':' . $value;
-        }, $this->config['connectionHeaders']);
-        curl_setopt($this->connection, CURLOPT_HTTPHEADER, $curlHeaders);
+        return $response;
+    }
+
+    /**
+     * @param mixed[] $query
+     */
+    public function executePost(string $endPoint, array $query = []) : string
+    {
+        if ($this->connection === null) {
+            $this->connect();
+        }
+        $url = $this->prepareConnection($endPoint, $query);
+        curl_setopt($this->connection, CURLOPT_POST, 1);
 
         $response = curl_exec($this->connection);
         if ($response === false) {
@@ -117,4 +128,30 @@ private function getBaseUriParts() : array
             'pass' => $this->config['password'],
         ];
     }
+
+    /**
+     * @param mixed[] $query
+     */
+    protected function prepareConnection(string $endPoint, array $query = []) : string
+    {
+        curl_reset($this->connection);
+
+        $uriParts = $this->getBaseUriParts();
+        $uriParts['path'] .= $endPoint;
+        if (!empty($query)) {
+            $queryParameters = http_build_query($query);
+            $queryString = preg_replace('/%5B(?:[0-9]|[1-9][0-9]+)%5D=/', '%5B%5D=', $queryParameters);
+            $uriParts['query'] = $queryString;
+        }
+        $url = $this->buildUrl($uriParts);
+
+        curl_setopt($this->connection, CURLOPT_URL, $url);
+        curl_setopt($this->connection, CURLOPT_TIMEOUT, $this->config['timeout']);
+        curl_setopt($this->connection, CURLOPT_RETURNTRANSFER, true);
+        $curlHeaders = array_map(function ($key, $value) {
+            return $key . ':' . $value;
+        }, $this->config['connectionHeaders']);
+        curl_setopt($this->connection, CURLOPT_HTTPHEADER, $curlHeaders);
+        return $url;
+    }
 }
diff --git a/src/Connection/GuzzleConnection.php b/src/Connection/GuzzleConnection.php
index 39ab221..3a1e527 100644
--- a/src/Connection/GuzzleConnection.php
+++ b/src/Connection/GuzzleConnection.php
@@ -49,7 +49,23 @@ public function create(array $config) : ConnectionInterface
     /**
      * @param mixed[] $query
      */
-    public function execute(string $endPoint, array $query = []) : string
+    public function executeGet(string $endPoint, array $query = []) : string
+    {
+        return $this->executeRequest('GET', $endPoint, $query);
+    }
+
+    /**
+     * @param mixed[] $query
+     */
+    public function executePost(string $endPoint, array $query = []) : string
+    {
+        return $this->executeRequest('POST', $endPoint, $query);
+    }
+
+    /**
+     * @param mixed[] $query
+     */
+    private function executeRequest(string $method, string $endPoint, array $query = []) : string
     {
         if ($this->client === null) {
             $this->connect();
@@ -60,21 +76,22 @@ public function execute(string $endPoint, array $query = []) : string
         $queryString = preg_replace('/%5B(?:[0-9]|[1-9][0-9]+)%5D=/', '%5B%5D=', $queryParameters);
 
         $response = $this->client->request(
-            'GET',
+            $method,
             $endPoint,
             [
                 'query' => $queryString,
             ]
         );
 
-        if ($response->getStatusCode() !== 200) {
+        if ($response->getStatusCode() !== 200 && $response->getStatusCode() !== 204) {
             $parts = parse_url($this->getBaseUri());
             $parts['path'] = $parts['path'] . $endPoint;
             $parts['query'] = http_build_query($query);
             $uri = Uri::fromParts($parts);
             throw new ConnectionException(
                 sprintf(
-                    'Request GET `%s` returned with code %d and message `%s`',
+                    'Request %s `%s` returned with code %d and message `%s`',
+                    $method,
                     (string) $uri,
                     $response->getStatusCode(),
                     $response->getBody()->getContents()
diff --git a/src/PApiMetaSpec.php b/src/PApiMetaSpec.php
index 861d2f5..f3d4c76 100644
--- a/src/PApiMetaSpec.php
+++ b/src/PApiMetaSpec.php
@@ -19,7 +19,7 @@ protected function configure() : void
         $jsonModule = new JsonModule();
 
         $phpModule->addPropertySerializer(new DateTimeFormattingSerializer(
-            'Y-m-d\TH:i:s.uP',
+            'Y-m-d\TH:i:s.u???P',
             \DateTimeImmutable::class,
             '0001-01-01T00:00:00Z'
         ));
diff --git a/src/Response/Meta/ResponseDataMeta.php b/src/Response/Meta/ResponseDataMeta.php
index 1d9fd4d..9bac24c 100644
--- a/src/Response/Meta/ResponseDataMeta.php
+++ b/src/Response/Meta/ResponseDataMeta.php
@@ -25,6 +25,7 @@ class ResponseDataMeta extends ResponseData implements MetaInterface, PhpMetaInt
 	const RESULT = 'result';
 	const ACTIVE_TARGETS = 'activeTargets';
 	const ACTIVE_ALERTMANAGERS = 'activeAlertmanagers';
+	const NAME = 'name';
 
 	/** @var ResponseDataMeta */
 	private static $instance;
@@ -113,6 +114,7 @@ public static function reset($object)
 		$object->result = NULL;
 		$object->activeTargets = NULL;
 		$object->activeAlertmanagers = NULL;
+		$object->name = NULL;
 	}
 
 
@@ -159,6 +161,11 @@ public static function hash($object, $algoOrCtx = 'md5', $raw = false)
 			}
 		}
 
+		if (isset($object->name)) {
+			hash_update($ctx, 'name');
+			hash_update($ctx, (string)$object->name);
+		}
+
 		if (is_string($algoOrCtx)) {
 			return hash_final($ctx, $raw);
 		} else {
@@ -266,6 +273,17 @@ public static function fromArray($input, $group = null, $object = null)
 			$object->activeAlertmanagers = null;
 		}
 
+		if (($id & 1) > 0 && isset($input['name'])) {
+			$object->name = $input['name'];
+		} elseif (($id & 1) > 0 && array_key_exists('name', $input) && $input['name'] === null) {
+			$object->name = null;
+		}
+		if (($id & 2) > 0 && isset($input['name'])) {
+			$object->name = $input['name'];
+		} elseif (($id & 2) > 0 && array_key_exists('name', $input) && $input['name'] === null) {
+			$object->name = null;
+		}
+
 		return $object;
 	}
 
@@ -367,6 +385,13 @@ public static function toArray($object, $group = null, $filter = null)
 				}
 			}
 
+			if (($id & 1) > 0 && ($filter === null || isset($filter['name']))) {
+				$output['name'] = $object->name;
+			}
+			if (($id & 2) > 0 && ((isset($object->name) && $filter === null) || isset($filter['name']))) {
+				$output['name'] = $object->name;
+			}
+
 		} catch (\Exception $e) {
 			Stack::$objects->detach($object);
 			throw $e;
@@ -478,6 +503,17 @@ public static function fromObject($input, $group = null, $object = null)
 			$object->activeAlertmanagers = null;
 		}
 
+		if (($id & 1) > 0 && isset($input['name'])) {
+			$object->name = $input['name'];
+		} elseif (($id & 1) > 0 && array_key_exists('name', $input) && $input['name'] === null) {
+			$object->name = null;
+		}
+		if (($id & 2) > 0 && isset($input['name'])) {
+			$object->name = $input['name'];
+		} elseif (($id & 2) > 0 && array_key_exists('name', $input) && $input['name'] === null) {
+			$object->name = null;
+		}
+
 		return $object;
 	}
 
@@ -579,6 +615,13 @@ public static function toObject($object, $group = null, $filter = null)
 				}
 			}
 
+			if (($id & 1) > 0 && ($filter === null || isset($filter['name']))) {
+				$output['name'] = $object->name;
+			}
+			if (($id & 2) > 0 && ((isset($object->name) && $filter === null) || isset($filter['name']))) {
+				$output['name'] = $object->name;
+			}
+
 		} catch (\Exception $e) {
 			Stack::$objects->detach($object);
 			throw $e;
diff --git a/src/Response/ResponseData.php b/src/Response/ResponseData.php
index 840c8dd..5841d6e 100644
--- a/src/Response/ResponseData.php
+++ b/src/Response/ResponseData.php
@@ -23,6 +23,9 @@ class ResponseData
     /** @var AlertManager[] */
     protected $activeAlertmanagers;
 
+    /** @var string */
+    protected $name;
+
     public function getResultType() : string
     {
         return $this->resultType;
@@ -49,4 +52,9 @@ public function getActiveAlertmanagers() : array
     {
         return $this->activeAlertmanagers;
     }
+
+    public function getName() : string
+    {
+        return $this->name;
+    }
 }
diff --git a/tests/Fixtures/snapshotResponse.json b/tests/Fixtures/snapshotResponse.json
new file mode 100644
index 0000000..4e2e691
--- /dev/null
+++ b/tests/Fixtures/snapshotResponse.json
@@ -0,0 +1,6 @@
+{
+  "status": "success",
+  "data": {
+    "name": "20171210T211224Z-2be650b6d019eb54"
+  }
+}
diff --git a/tests/PApi/ResponseTranslationTest.php b/tests/PApi/ResponseTranslationTest.php
index 1821461..575017f 100644
--- a/tests/PApi/ResponseTranslationTest.php
+++ b/tests/PApi/ResponseTranslationTest.php
@@ -96,4 +96,13 @@ public function testVectorResponse() : void
         $this->assertInstanceOf(Metric::class, $metric);
         $this->assertInstanceOf(\DateTimeImmutable::class, $metric->getTimeAsObject());
     }
+
+    public function testSnapshotResponse() : void
+    {
+        $response = DataResponseMeta::fromJson(file_get_contents(__DIR__ . '/../Fixtures/snapshotResponse.json'));
+
+        $this->assertSame(Response::STATUS_SUCCESS, $response->getStatus());
+        $this->assertInstanceOf(ResponseData::class, $response->getData());
+        $this->assertEquals('20171210T211224Z-2be650b6d019eb54', $response->getData()->getName());
+    }
 }