diff --git a/antp/ankiconnect.py b/antp/ankiconnect.py
index 2d21e9b..9c7278d 100644
--- a/antp/ankiconnect.py
+++ b/antp/ankiconnect.py
@@ -16,7 +16,10 @@ def request(action, **params):
 
 def invoke(action, **params):
     request_json = json.dumps(request(action, **params)).encode('utf-8')
-    response = json.load(urllib.request.urlopen(urllib.request.Request('http://127.0.0.1:8765', request_json)))
+    response = json.load(urllib.request.urlopen(
+        urllib.request.Request('http://127.0.0.1:8765', request_json),
+        timeout=10
+    ))
     if len(response) != 2:
         raise ANTPError('response has an unexpected number of fields')
     if 'error' not in response: