diff --git a/HISTORY.rst b/HISTORY.rst
index 7ded44d6fc..b3bd465097 100644
--- a/HISTORY.rst
+++ b/HISTORY.rst
@@ -277,6 +277,7 @@
   clarity.
 * Add note about the new preparestatic command.
 * Add no-result template for workflow instance detail view.
+* Update HTTP workflow action to new requests API.
 
 3.1.11 (2019-04-XX)
 ===================
diff --git a/mayan/apps/document_states/workflow_actions.py b/mayan/apps/document_states/workflow_actions.py
index 998143b1aa..0646cb25e0 100644
--- a/mayan/apps/document_states/workflow_actions.py
+++ b/mayan/apps/document_states/workflow_actions.py
@@ -166,4 +166,4 @@ class HTTPPostAction(WorkflowAction):
 
         logger.debug('payload json result: %s', payload)
 
-        requests.post(url=url, data=payload, timeout=self.form_data['timeout'])
+        requests.post(url=url, json=payload, timeout=self.form_data['timeout'])