diff --git a/Java/Spring/activitypubbot/src/main/java/dev/activitypub/activitypubbot/BotAPActorJsonSerializer.java b/Java/Spring/activitypubbot/src/main/java/dev/activitypub/activitypubbot/BotAPActorJsonSerializer.java
index b65f114..a1d077e 100644
--- a/Java/Spring/activitypubbot/src/main/java/dev/activitypub/activitypubbot/BotAPActorJsonSerializer.java
+++ b/Java/Spring/activitypubbot/src/main/java/dev/activitypub/activitypubbot/BotAPActorJsonSerializer.java
@@ -56,6 +56,8 @@ public class BotAPActorJsonSerializer extends StdSerializer<Bot> {
         jgen.writeStringField("type", bot.getType());
         jgen.writeStringField("summary", bot.getSummary());
 
+        jgen.writeStringField("published", bot.getPublished().toString());
+
         jgen.writeBooleanField("manuallyApproveFollowers", bot.isManuallyApproveFollowers());
         jgen.writeBooleanField("indexable", bot.isIndexable());