diff --git a/bindings/matrix-sdk-ffi/src/room.rs b/bindings/matrix-sdk-ffi/src/room.rs
index 6692a5a1d44..b175af4c2fd 100644
--- a/bindings/matrix-sdk-ffi/src/room.rs
+++ b/bindings/matrix-sdk-ffi/src/room.rs
@@ -873,6 +873,7 @@ impl From<matrix_sdk::room::request_to_join::RequestToJoinRoom> for RequestToJoi
             display_name: request.member_info.display_name.clone(),
             avatar_url: request.member_info.avatar_url.as_ref().map(|url| url.to_string()),
             reason: request.member_info.reason.clone(),
+            timestamp: request.timestamp.map(|ts| ts.into()),
             is_seen: request.is_seen,
             actions: Arc::new(RequestToJoinActions { inner: request }),
         }
@@ -900,6 +901,8 @@ pub struct RequestToJoin {
     pub avatar_url: Option<String>,
     /// An optional reason why the user wants join the room.
     pub reason: Option<String>,
+    /// The timestamp when this request was created.
+    pub timestamp: Option<u64>,
     /// Whether the request to join has been marked as `seen` so it can be
     /// filtered by the client.
     pub is_seen: bool,
@@ -931,6 +934,14 @@ impl RequestToJoinActions {
     pub async fn decline_and_ban(&self, reason: Option<String>) -> Result<(), ClientError> {
         self.inner.decline_and_ban(reason.as_deref()).await.map_err(Into::into)
     }
+
+    /// Marks the request as 'seen'.
+    ///
+    /// **IMPORTANT**: this won't update the current reference to this request,
+    /// a new one with the updated value should be emitted instead.
+    pub async fn mark_as_seen(&self) -> Result<(), ClientError> {
+        self.inner.clone().mark_as_seen().await.map_err(Into::into)
+    }
 }
 
 /// Generates a `matrix.to` permalink to the given room alias.
diff --git a/crates/matrix-sdk-base/src/deserialized_responses.rs b/crates/matrix-sdk-base/src/deserialized_responses.rs
index 6761120d1b0..0774a66155f 100644
--- a/crates/matrix-sdk-base/src/deserialized_responses.rs
+++ b/crates/matrix-sdk-base/src/deserialized_responses.rs
@@ -30,7 +30,7 @@ use ruma::{
         StateEventContent, StaticStateEventContent, StrippedStateEvent, SyncStateEvent,
     },
     serde::Raw,
-    EventId, MilliSecondsSinceUnixEpoch, OwnedEventId, OwnedRoomId, OwnedUserId, UserId,
+    EventId, MilliSecondsSinceUnixEpoch, OwnedEventId, OwnedRoomId, OwnedUserId, UInt, UserId,
 };
 use serde::Serialize;
 use unicode_normalization::UnicodeNormalization;
@@ -485,6 +485,14 @@ impl MemberEvent {
             _ => None,
         }
     }
+
+    /// The optional timestamp for this member event.
+    pub fn timestamp(&self) -> Option<UInt> {
+        match self {
+            MemberEvent::Sync(SyncStateEvent::Original(c)) => Some(c.origin_server_ts.0),
+            _ => None,
+        }
+    }
 }
 
 impl SyncOrStrippedState<RoomPowerLevelsEventContent> {
diff --git a/crates/matrix-sdk/src/room/mod.rs b/crates/matrix-sdk/src/room/mod.rs
index 5ada0c4c24e..93a9fed9fee 100644
--- a/crates/matrix-sdk/src/room/mod.rs
+++ b/crates/matrix-sdk/src/room/mod.rs
@@ -3280,6 +3280,7 @@ impl Room {
                     Some(RequestToJoinRoom::new(
                         self.clone(),
                         &event_id,
+                        member.event().timestamp(),
                         member.into(),
                         seen_request_ids.contains(&event_id),
                     ))
diff --git a/crates/matrix-sdk/src/room/request_to_join.rs b/crates/matrix-sdk/src/room/request_to_join.rs
index cad417f6a49..8ad054418b7 100644
--- a/crates/matrix-sdk/src/room/request_to_join.rs
+++ b/crates/matrix-sdk/src/room/request_to_join.rs
@@ -1,9 +1,7 @@
 use std::sync::Arc;
 
-use ruma::{
-    EventId, OwnedEventId, OwnedMxcUri,
-    OwnedUserId, RoomId,
-};
+use js_int::UInt;
+use ruma::{EventId, OwnedEventId, OwnedMxcUri, OwnedUserId, RoomId};
 
 use crate::{room::RoomMember, Error, Room};
 
@@ -13,6 +11,8 @@ pub struct RequestToJoinRoom {
     room: Arc<Room>,
     /// The event id of the event containing knock membership change.
     pub event_id: OwnedEventId,
+    /// The timestamp when this request was created.
+    pub timestamp: Option<UInt>,
     /// Some general room member info to display.
     pub member_info: RequestToJoinMemberInfo,
     /// Whether it's been marked as 'seen' by the client.
@@ -23,10 +23,11 @@ impl RequestToJoinRoom {
     pub(crate) fn new(
         room: Arc<Room>,
         event_id: &EventId,
+        timestamp: Option<UInt>,
         member: RequestToJoinMemberInfo,
         is_seen: bool,
     ) -> Self {
-        Self { room, event_id: event_id.to_owned(), member_info: member, is_seen }
+        Self { room, event_id: event_id.to_owned(), timestamp, member_info: member, is_seen }
     }
 
     /// The room id for the `Room` form whose access is requested.