diff --git a/wit/wit.py b/wit/wit.py
index 12a8bf7..c595a42 100644
--- a/wit/wit.py
+++ b/wit/wit.py
@@ -67,7 +67,7 @@ def message(self, msg, context=None, n=None, verbose=None):
         resp = req(self.logger, self.access_token, "GET", "/message", params)
         return resp
 
-    def speech(self, audio_file, headers=None, verbose=None):
+    def speech(self, audio_file, headers=None, context=None, verbose=None):
         """Sends an audio file to the /speech API.
         Uses the streaming feature of requests (see `req`), so opening the file
         in binary mode is strongly recommended (see
@@ -81,6 +81,8 @@ def speech(self, audio_file, headers=None, verbose=None):
         """
         params = {}
         headers = headers or {}
+        if context:
+            params["context"] = json.dumps(context)
         if verbose:
             params["verbose"] = True
         resp = req(