diff --git a/slack-base/src/main/java/com/hubspot/slack/client/methods/params/assistant/SetSuggestedPromptsParamsIF.java b/slack-base/src/main/java/com/hubspot/slack/client/methods/params/assistant/SetSuggestedPromptsParamsIF.java
index c5af71ce..eaa8bea6 100644
--- a/slack-base/src/main/java/com/hubspot/slack/client/methods/params/assistant/SetSuggestedPromptsParamsIF.java
+++ b/slack-base/src/main/java/com/hubspot/slack/client/methods/params/assistant/SetSuggestedPromptsParamsIF.java
@@ -17,7 +17,7 @@ default String getChannel() {
     return getChannelId();
   }
 
-  String getThreadTs();
+  Optional<String> getThreadTs();
 
   Optional<String> getTitle();