diff --git a/docs/news/29082019.doc b/docs/news/29082019.doc
new file mode 100644
index 00000000..1cb4ae8d
--- /dev/null
+++ b/docs/news/29082019.doc
@@ -0,0 +1 @@
+Fix webhook_grok example: avoid blocking when reading data from request stream
\ No newline at end of file
diff --git a/examples/connect/webhook_ngrok.py b/examples/connect/webhook_ngrok.py
index ea129734..0d950eef 100644
--- a/examples/connect/webhook_ngrok.py
+++ b/examples/connect/webhook_ngrok.py
@@ -115,7 +115,7 @@ def webhook_handler(request):
 
     Passes the raw http body directly to mbed sdk, to notify that a webhook was received
     """
-    body = request.stream.read().decode('utf8')
+    body = request.stream.read(request.content_length or 0).decode('utf8')
     print('webhook handler saw:', body)
     api.notify_webhook_received(payload=body)