diff --git a/lib/tasks/specs.json b/lib/tasks/specs.json
index 81a55196..89af82de 100644
--- a/lib/tasks/specs.json
+++ b/lib/tasks/specs.json
@@ -108,6 +108,7 @@
       "maxDigits": "number",
       "interDigitTimeout": "number",
       "timeout": "number",
+      "listenAfterSpeech": "boolean",
       "recognizer": "#recognizer",
       "play": "#play",
       "say": "#say"