diff --git a/lexicons/chat/bsky/convo/defs.json b/lexicons/chat/bsky/convo/defs.json
index 2d8f70aa7..e4a25f63e 100644
--- a/lexicons/chat/bsky/convo/defs.json
+++ b/lexicons/chat/bsky/convo/defs.json
@@ -90,6 +90,7 @@
           "refs": ["#messageView", "#deletedMessageView"]
         },
         "muted": { "type": "boolean" },
+        "opened": { "type": "boolean" },
         "unreadCount": { "type": "integer" }
       }
     },
diff --git a/packages/lexicon/lib/src/lexicons.g.dart b/packages/lexicon/lib/src/lexicons.g.dart
index 4fc2321fb..dfbe4bf20 100644
--- a/packages/lexicon/lib/src/lexicons.g.dart
+++ b/packages/lexicon/lib/src/lexicons.g.dart
@@ -8495,6 +8495,7 @@ const chatBskyConvoDefs = <String, dynamic>{
           "refs": ["#messageView", "#deletedMessageView"]
         },
         "muted": {"type": "boolean"},
+        "opened": {"type": "boolean"},
         "unreadCount": {"type": "integer"}
       }
     },
diff --git a/website/docs/lexicons/chat/bsky/convo/defs.md b/website/docs/lexicons/chat/bsky/convo/defs.md
index c1edf9df9..79edd483b 100644
--- a/website/docs/lexicons/chat/bsky/convo/defs.md
+++ b/website/docs/lexicons/chat/bsky/convo/defs.md
@@ -57,6 +57,7 @@ description: chat.bsky.convo.defs
 | **members** | array of [chat.bsky.actor.defs#profileViewBasic](../../../../lexicons/chat/bsky/actor/defs.md#profileviewbasic) | - | ✅ | - |
 | **lastMessage** | union of <br/>[#messageView](#messageview)<br/>[#deletedMessageView](#deletedmessageview) | - | ❌ | - |
 | **muted** | boolean | - | ✅ | - |
+| **opened** | boolean | - | ❌ | - |
 | **unreadCount** | integer | - | ✅ | - |
 
 ## #logBeginConvo