diff --git a/bindings/matrix-sdk-ffi/src/room.rs b/bindings/matrix-sdk-ffi/src/room.rs
index 30787048d88..5fb3abad596 100644
--- a/bindings/matrix-sdk-ffi/src/room.rs
+++ b/bindings/matrix-sdk-ffi/src/room.rs
@@ -818,6 +818,30 @@ impl Room {
         }))
     }
 
+    pub fn send_voice_message(
+        self: Arc<Self>,
+        url: String,
+        audio_info: AudioInfo,
+        waveform: Vec<u16>,
+        progress_watcher: Option<Box<dyn ProgressWatcher>>,
+    ) -> Arc<SendAttachmentJoinHandle> {
+        SendAttachmentJoinHandle::new(RUNTIME.spawn(async move {
+            let mime_str =
+                audio_info.mimetype.as_ref().ok_or(RoomError::InvalidAttachmentMimeType)?;
+            let mime_type =
+                mime_str.parse::<Mime>().map_err(|_| RoomError::InvalidAttachmentMimeType)?;
+
+            let base_audio_info: BaseAudioInfo = BaseAudioInfo::try_from(&audio_info)
+                .map_err(|_| RoomError::InvalidAttachmentData)?;
+
+            let attachment_info =
+                AttachmentInfo::Voice { audio_info: base_audio_info, waveform: Some(waveform) };
+            let attachment_config = AttachmentConfig::new().info(attachment_info);
+
+            self.send_attachment(url, mime_type, attachment_config, progress_watcher).await
+        }))
+    }
+
     pub fn send_file(
         self: Arc<Self>,
         url: String,
diff --git a/crates/matrix-sdk/Cargo.toml b/crates/matrix-sdk/Cargo.toml
index 72d9421206c..58aff2835d1 100644
--- a/crates/matrix-sdk/Cargo.toml
+++ b/crates/matrix-sdk/Cargo.toml
@@ -88,7 +88,7 @@ matrix-sdk-sqlite = { version = "0.1.0", path = "../matrix-sdk-sqlite", default-
 mime = "0.3.16"
 mime2ext = "0.1.52"
 rand = { version = "0.8.5", optional = true }
-ruma = { workspace = true, features = ["rand", "unstable-msc2448", "unstable-msc2965", "unstable-msc3930"] }
+ruma = { workspace = true, features = ["rand", "unstable-msc2448", "unstable-msc2965", "unstable-msc3930", "unstable-msc3245-v1-compat"] }
 serde = { workspace = true }
 serde_html_form = { workspace = true }
 serde_json = { workspace = true }
diff --git a/crates/matrix-sdk/src/attachment.rs b/crates/matrix-sdk/src/attachment.rs
index 0dc1addc639..9a3b1b59b5d 100644
--- a/crates/matrix-sdk/src/attachment.rs
+++ b/crates/matrix-sdk/src/attachment.rs
@@ -87,6 +87,13 @@ pub enum AttachmentInfo {
     Audio(BaseAudioInfo),
     /// The metadata of a file.
     File(BaseFileInfo),
+    /// The metadata of a voice message
+    Voice {
+        /// The audio info
+        audio_info: BaseAudioInfo,
+        /// The waveform of the voice message
+        waveform: Option<Vec<u16>>,
+    },
 }
 
 impl From<AttachmentInfo> for ImageInfo {
@@ -125,6 +132,10 @@ impl From<AttachmentInfo> for AudioInfo {
                 duration: info.duration,
                 size: info.size,
             }),
+            AttachmentInfo::Voice { audio_info, .. } => assign!(AudioInfo::new(), {
+                duration: audio_info.duration,
+                size: audio_info.size,
+            }),
             _ => AudioInfo::new(),
         }
     }
diff --git a/crates/matrix-sdk/src/encryption/mod.rs b/crates/matrix-sdk/src/encryption/mod.rs
index db763adb884..2802ba82362 100644
--- a/crates/matrix-sdk/src/encryption/mod.rs
+++ b/crates/matrix-sdk/src/encryption/mod.rs
@@ -45,8 +45,8 @@ use ruma::{
     assign,
     events::room::{
         message::{
-            AudioInfo, AudioMessageEventContent, FileInfo, FileMessageEventContent,
-            ImageMessageEventContent, MessageType, VideoInfo, VideoMessageEventContent,
+            AudioMessageEventContent, FileInfo, FileMessageEventContent, ImageMessageEventContent,
+            MessageType, VideoInfo, VideoMessageEventContent,
         },
         ImageInfo, MediaSource, ThumbnailInfo,
     },
@@ -202,13 +202,13 @@ impl Client {
                 MessageType::Image(content)
             }
             mime::AUDIO => {
-                let info = assign!(info.map(AudioInfo::from).unwrap_or_default(), {
-                    mimetype: Some(content_type.as_ref().to_owned()),
-                });
-                let content = assign!(AudioMessageEventContent::encrypted(body.to_owned(), file), {
-                    info: Some(Box::new(info))
-                });
-                MessageType::Audio(content)
+                let audio_message_event_content =
+                    AudioMessageEventContent::encrypted(body.to_owned(), file);
+                MessageType::Audio(crate::media::update_audio_message_event(
+                    audio_message_event_content,
+                    content_type,
+                    info,
+                ))
             }
             mime::VIDEO => {
                 let info = assign!(info.map(VideoInfo::from).unwrap_or_default(), {
diff --git a/crates/matrix-sdk/src/media.rs b/crates/matrix-sdk/src/media.rs
index 0aa992627a8..9e04f8c938e 100644
--- a/crates/matrix-sdk/src/media.rs
+++ b/crates/matrix-sdk/src/media.rs
@@ -32,8 +32,9 @@ use ruma::{
     assign,
     events::room::{
         message::{
-            self, AudioInfo, FileInfo, FileMessageEventContent, ImageMessageEventContent,
-            MessageType, VideoInfo, VideoMessageEventContent,
+            self, AudioInfo, AudioMessageEventContent, FileInfo, FileMessageEventContent,
+            ImageMessageEventContent, MessageType, UnstableAudioDetailsContentBlock,
+            UnstableVoiceContentBlock, VideoInfo, VideoMessageEventContent,
         },
         ImageInfo, MediaSource, ThumbnailInfo,
     },
@@ -438,13 +439,13 @@ impl Media {
                 )
             }
             mime::AUDIO => {
-                let info = assign!(info.map(AudioInfo::from).unwrap_or_default(), {
-                    mimetype: Some(content_type.as_ref().to_owned()),
-                });
-                MessageType::Audio(
-                    message::AudioMessageEventContent::plain(body.to_owned(), url)
-                        .info(Box::new(info)),
-                )
+                let audio_message_event_content =
+                    message::AudioMessageEventContent::plain(body.to_owned(), url);
+                MessageType::Audio(update_audio_message_event(
+                    audio_message_event_content,
+                    content_type,
+                    info,
+                ))
             }
             mime::VIDEO => {
                 let info = assign!(info.map(VideoInfo::from).unwrap_or_default(), {
@@ -495,3 +496,21 @@ impl Media {
         }
     }
 }
+
+pub(crate) fn update_audio_message_event(
+    mut audio_message_event_content: AudioMessageEventContent,
+    content_type: &Mime,
+    info: Option<AttachmentInfo>,
+) -> AudioMessageEventContent {
+    if let Some(AttachmentInfo::Voice { audio_info, waveform: Some(waveform_vec) }) = &info {
+        if let Some(duration) = audio_info.duration {
+            let waveform = waveform_vec.iter().map(|v| (*v).into()).collect();
+            audio_message_event_content.audio =
+                Some(UnstableAudioDetailsContentBlock::new(duration, waveform));
+        }
+        audio_message_event_content.voice = Some(UnstableVoiceContentBlock::new());
+    }
+
+    let audio_info = assign!(info.map(AudioInfo::from).unwrap_or_default(), {mimetype: Some(content_type.as_ref().to_owned()), });
+    audio_message_event_content.info(Box::new(audio_info))
+}