diff --git a/README.md b/README.md
index cc7b8a7..a08477d 100644
--- a/README.md
+++ b/README.md
@@ -50,7 +50,7 @@ Here's a list of Hypernode API features implemented in the client.
 - Listing Hypernodes related to your API key
 - Updating one or multiple Hypernode settings at once.
 - Querying/polling the logbook for the status of a job.
-- Listing, creating and cancelling Brancher Hypernode instances.
+- Listing, creating, updating and cancelling Brancher Hypernode instances.
 
 ## Related projects
 
diff --git a/src/Service/App.php b/src/Service/App.php
index 29dedfe..c2eac05 100644
--- a/src/Service/App.php
+++ b/src/Service/App.php
@@ -10,6 +10,7 @@ class App extends AbstractService
     public const V2_APP_DETAIL_URL = "/v2/app/%s/";
     public const V2_APP_CANCEL_URL = "/v2/app/%s/cancel/";
     public const V2_BRANCHER_APP_URL = "/v2/brancher/app/%s/";
+    public const V2_BRANCHER_DETAIL_URL = "/v2/brancher/%s/";
     public const V1_APP_FLOWS_URL = "/logbook/v1/logbooks/%s/flows/";
 
     /**
diff --git a/src/Service/BrancherApp.php b/src/Service/BrancherApp.php
index aca7489..26ae7e9 100644
--- a/src/Service/BrancherApp.php
+++ b/src/Service/BrancherApp.php
@@ -53,6 +53,31 @@ public function create(string $app, ?array $data = null): string
         return $data['name'];
     }
 
+    /**
+     * Update a Brancher app.
+     *
+     * Currently, only the `labels` field is supported.
+     *
+     * @param string $name Name of the Brancher node
+     * @param array $data Data to be updated
+     * @return array Updated data
+     * @throws HypernodeApiClientException
+     * @throws HypernodeApiServerException
+     */
+    public function update(string $name, array $data): array
+    {
+        $url = sprintf(App::V2_BRANCHER_DETAIL_URL, $name);
+
+        $response = $this->client->api->put($url, [], json_encode($data));
+
+        $this->client->maybeThrowApiExceptions($response);
+
+        /** @var array $data */
+        $data = $this->client->getJsonFromResponse($response);
+
+        return $data;
+    }
+
     /**
      * Cancel an brancher app.
      *
diff --git a/tests/unit/Service/BrancherAppTest.php b/tests/unit/Service/BrancherAppTest.php
index 80f55c8..a7d8310 100644
--- a/tests/unit/Service/BrancherAppTest.php
+++ b/tests/unit/Service/BrancherAppTest.php
@@ -158,4 +158,52 @@ public function testCancelBrancherAppRaisesServerExceptions()
 
         $this->client->brancherApp->cancel('johndoe');
     }
+
+    public function testUpdateBrancherApp()
+    {
+        $this->responses->append(
+            new Response(200, [], json_encode([
+                'labels' => ['somekey' => 'somevalue']
+            ])),
+        );
+
+        $result = $this->client->brancherApp->update('johndoe-eph123456', ['labels' => ['somekey=somevalue']]);
+
+        $request = $this->responses->getLastRequest();
+        $this->assertEquals('PUT', $request->getMethod());
+        $this->assertEquals('/v2/brancher/johndoe-eph123456/', $request->getUri());
+        $this->assertJson((string)$request->getBody());
+        $this->assertEquals(
+            ['labels' => ['somekey=somevalue']],
+            json_decode((string)$request->getBody(), true)
+        );
+        $this->assertEquals(
+            ['labels' => ['somekey' => 'somevalue']],
+            $result
+        );
+    }
+
+    public function testUpdateBrancherAppRaisesClientExceptions()
+    {
+        $badRequestResponse = new Response(400, [], json_encode([
+            'non_field_errors' => ['Your request was invalid.']
+        ]));
+        $this->responses->append($badRequestResponse);
+
+        $this->expectExceptionObject(new HypernodeApiClientException($badRequestResponse));
+
+        $this->client->brancherApp->update('johndoe', ['labels' => []]);
+    }
+
+    public function testUpdateBrancherAppRaisesServerExceptions()
+    {
+        $badRequestResponse = new Response(500, [], json_encode([
+            'non_field_errors' => ['Something went wrong processing your request.']
+        ]));
+        $this->responses->append($badRequestResponse);
+
+        $this->expectExceptionObject(new HypernodeApiServerException($badRequestResponse));
+
+        $this->client->brancherApp->update('johndoe', ['labels' => []]);
+    }
 }