diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7158a966..709fbe0e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -14,11 +14,13 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - `EditedMessageIsTooLong` error ([#109][pr109])
 - `UntilDate` enum and use it for `{Restricted, Banned}::until_date` ([#116][pr116])
 - `Limits::messages_per_min_channel` ([#121][pr121])
+- `media_group_id` field to `MediaDocument` and `MediaAudio` ([#139][pr139])
 
 [pr109]: https://github.com/teloxide/teloxide-core/pull/109
 [pr116]: https://github.com/teloxide/teloxide-core/pull/116
 [pr121]: https://github.com/teloxide/teloxide-core/pull/121
 [pr135]: https://github.com/teloxide/teloxide-core/pull/135
+[pr139]: https://github.com/teloxide/teloxide-core/pull/139
 
 ### Changed
 
diff --git a/src/types/message.rs b/src/types/message.rs
index ed78f507..0afd73f4 100644
--- a/src/types/message.rs
+++ b/src/types/message.rs
@@ -319,6 +319,10 @@ pub struct MediaAudio {
     /// bot commands, etc. that appear in the caption.
     #[serde(default = "Vec::new")]
     pub caption_entities: Vec<MessageEntity>,
+
+    /// The unique identifier of a media message group this message belongs
+    /// to.
+    pub media_group_id: Option<String>,
 }
 
 #[derive(Clone, Debug, PartialEq, Serialize, Deserialize)]
@@ -340,6 +344,10 @@ pub struct MediaDocument {
     /// bot commands, etc. that appear in the caption.
     #[serde(default = "Vec::new")]
     pub caption_entities: Vec<MessageEntity>,
+
+    /// The unique identifier of a media message group this message belongs
+    /// to.
+    pub media_group_id: Option<String>,
 }
 
 #[derive(Clone, Debug, PartialEq, Serialize, Deserialize)]
@@ -620,6 +628,14 @@ mod getters {
                 | Common(MessageCommon {
                     media_kind: MediaKind::Photo(MediaPhoto { media_group_id, .. }),
                     ..
+                })
+                | Common(MessageCommon {
+                    media_kind: MediaKind::Document(MediaDocument { media_group_id, .. }),
+                    ..
+                })
+                | Common(MessageCommon {
+                    media_kind: MediaKind::Audio(MediaAudio { media_group_id, .. }),
+                    ..
                 }) => media_group_id.as_ref().map(Deref::deref),
                 _ => None,
             }