diff --git a/src/api/types.rs b/src/api/types.rs
index 129499a..a477985 100644
--- a/src/api/types.rs
+++ b/src/api/types.rs
@@ -1347,7 +1347,8 @@ pub struct ChannelUnreadUpdate {
 /// See also [ChannelUnreadUpdates]
 pub struct ChannelUnreadUpdateObject {
     pub id: String,
-    pub last_message_id: String
+    pub last_message_id: String,
+    pub last_pin_timestamp: Option<String>
 }
 
 impl WebSocketEvent for ChannelUnreadUpdate {}
@@ -1567,6 +1568,19 @@ pub struct GuildRoleDelete {
 
 impl WebSocketEvent for GuildRoleDelete {}
 
+#[derive(Debug, Deserialize, Serialize, Default)]
+/// Officially Undocumented
+/// 
+/// Seems to be passively set to update the client on guild details (though, why not just send the update events?)
+pub struct PassiveUpdateV1 {
+    pub voice_states: Vec<VoiceState>,
+    pub members: Vec<GuildMember>,
+    pub guild_id: String,
+    pub channels: Vec<ChannelUnreadUpdateObject>,
+}
+
+impl WebSocketEvent for PassiveUpdateV1 {}
+
 #[derive(Debug, Default, Deserialize, Serialize)]
 /// See https://discord.com/developers/docs/topics/gateway-events#integration-create
 pub struct IntegrationCreate {
diff --git a/src/gateway.rs b/src/gateway.rs
index 5677465..fab1434 100644
--- a/src/gateway.rs
+++ b/src/gateway.rs
@@ -340,6 +340,10 @@ impl Gateway {
                     "GUILD_SCHEDULED_EVENT_DELETE" => {}
                     "GUILD_SCHEDULED_EVENT_USER_ADD" => {}
                     "GUILD_SCHEDULED_EVENT_USER_REMOVE" => {}
+                    "PASSIVE_UPDATE_V1" => {
+                        let new_data: PassiveUpdateV1 = serde_json::from_str(gateway_payload.d.unwrap().get()).unwrap();
+                        self.events.lock().await.guild.passive_update_v1.update_data(new_data).await;
+                    }
                     "INTEGRATION_CREATE" => {
                         let new_data: IntegrationCreate = serde_json::from_str(gateway_payload.d.unwrap().get()).unwrap();
                         self.events.lock().await.integration.create.update_data(new_data).await;
@@ -395,8 +399,6 @@ impl Gateway {
                         let new_data: PresenceUpdate = serde_json::from_str(gateway_payload.d.unwrap().get()).unwrap();
                         self.events.lock().await.user.presence_update.update_data(new_data).await;
                     }
-                    // What is this?
-                    "PASSIVE_UPDATE_V1" => {}
                     "STAGE_INSTANCE_CREATE" => {}
                     "STAGE_INSTANCE_UPDATE" => {}
                     "STAGE_INSTANCE_DELETE" => {}
@@ -690,6 +692,7 @@ mod events {
         pub role_scheduled_event_delete: GatewayEvent<ThreadCreate>,
         pub role_scheduled_event_user_add: GatewayEvent<ThreadCreate>,
         pub role_scheduled_event_user_remove: GatewayEvent<ThreadCreate>,*/
+        pub passive_update_v1: GatewayEvent<PassiveUpdateV1>,
     }
 
     #[derive(Default, Debug)]