diff --git a/misk-slack/api/misk-slack.api b/misk-slack/api/misk-slack.api
index 707368cbe9..0d92fa96af 100644
--- a/misk-slack/api/misk-slack.api
+++ b/misk-slack/api/misk-slack.api
@@ -560,7 +560,7 @@ public final class misk/slack/webapi/helpers/PostMessageRequest {
 	public final fun getBlocks ()Ljava/util/List;
 	public final fun getChannel ()Ljava/lang/String;
 	public final fun getResponse_type ()Ljava/lang/String;
-	public final fun getThread_timestamp ()Ljava/lang/String;
+	public final fun getThread_ts ()Ljava/lang/String;
 	public fun hashCode ()I
 	public fun toString ()Ljava/lang/String;
 }
diff --git a/misk-slack/src/main/kotlin/misk/slack/webapi/helpers/SlackJson.kt b/misk-slack/src/main/kotlin/misk/slack/webapi/helpers/SlackJson.kt
index 8f76d31c3a..bea0943e90 100644
--- a/misk-slack/src/main/kotlin/misk/slack/webapi/helpers/SlackJson.kt
+++ b/misk-slack/src/main/kotlin/misk/slack/webapi/helpers/SlackJson.kt
@@ -9,7 +9,7 @@ data class PostMessageRequest @JvmOverloads constructor(
   val channel: String,
   val response_type: String? = "in_channel",
   val blocks: List<Any>,
-  val thread_timestamp: String? = null,
+  val thread_ts: String? = null,
 )
 
 /**