diff --git a/Cargo.lock b/Cargo.lock
index 0a1963b2..2efead8b 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2230,7 +2230,7 @@ dependencies = [
  "serde_cbor",
  "serde_json",
  "sqlx",
- "teloxide-core 0.10.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "teloxide-core",
  "teloxide-macros 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "thiserror",
  "tokio",
@@ -2277,37 +2277,6 @@ dependencies = [
  "xshell",
 ]
 
-[[package]]
-name = "teloxide-core"
-version = "0.10.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b4308e2880a535d8c30e494d548af1deb573e1fc06f2574fdd01b8fccf7c801a"
-dependencies = [
- "bitflags 1.3.2",
- "bytes",
- "chrono",
- "derive_more",
- "either",
- "futures",
- "log",
- "mime",
- "once_cell",
- "pin-project",
- "rc-box",
- "reqwest",
- "serde",
- "serde_json",
- "serde_with",
- "take_mut",
- "takecell",
- "thiserror",
- "tokio",
- "tokio-util",
- "url",
- "uuid",
- "vecrem",
-]
-
 [[package]]
 name = "teloxide-macros"
 version = "0.8.0"
diff --git a/crates/teloxide-core/src/types.rs b/crates/teloxide-core/src/types.rs
index 3d222acf..407394da 100644
--- a/crates/teloxide-core/src/types.rs
+++ b/crates/teloxide-core/src/types.rs
@@ -447,6 +447,45 @@ pub(crate) mod option_url_from_string {
     }
 }
 
+// Issue https://github.com/teloxide/teloxide/issues/1135
+// Workaround to avoid flattening with serde-multipart requests (involving
+// file-manipulations)
+pub(crate) mod msg_id_as_int {
+    use crate::types::MessageId;
+
+    use serde::{Deserialize, Deserializer, Serialize, Serializer};
+
+    pub(crate) fn serialize<S>(MessageId(id): &MessageId, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        id.serialize(serializer)
+    }
+
+    pub(crate) fn deserialize<'de, D>(deserializer: D) -> Result<MessageId, D::Error>
+    where
+        D: Deserializer<'de>,
+    {
+        i32::deserialize(deserializer).map(MessageId)
+    }
+
+    #[test]
+    fn test() {
+        #[derive(Serialize, Deserialize)]
+        struct Struct {
+            #[serde(with = "crate::types::msg_id_as_int")]
+            message_id: MessageId,
+        }
+
+        {
+            let json = r#"{"message_id":123}"#;
+            let s: Struct = serde_json::from_str(json).unwrap();
+            assert_eq!(s.message_id, MessageId(123));
+            assert_eq!(serde_json::to_string(&s).unwrap(), json.to_owned());
+        }
+    }
+}
+
 pub(crate) mod option_msg_id_as_int {
     use crate::types::MessageId;
 
diff --git a/crates/teloxide-core/src/types/message_id.rs b/crates/teloxide-core/src/types/message_id.rs
index 8d2e573a..186f431d 100644
--- a/crates/teloxide-core/src/types/message_id.rs
+++ b/crates/teloxide-core/src/types/message_id.rs
@@ -22,6 +22,9 @@ pub struct MessageId(pub i32);
 //
 //      (we can't change the default format of `MessageId` because it's returned
 //      by some methods and we can't change serialization there)
+// If you flatten `MessageId` within serde-multipart request, it will fail, see https://github.com/teloxide/teloxide/issues/1135
+// Try to use `serde(with = "crate::types::msg_id_as_int")]` instead of
+// `#[serde(flatten)]`
 
 #[derive(Serialize, Deserialize)]
 struct MessageIdRaw {
diff --git a/crates/teloxide-core/src/types/reply_parameters.rs b/crates/teloxide-core/src/types/reply_parameters.rs
index 09c1ede8..794c4896 100644
--- a/crates/teloxide-core/src/types/reply_parameters.rs
+++ b/crates/teloxide-core/src/types/reply_parameters.rs
@@ -8,7 +8,8 @@ use crate::types::{MessageEntity, MessageId, Recipient};
 pub struct ReplyParameters {
     /// Identifier of the message that will be replied to in the current chat,
     /// or in the chat _chat\_id_ if it is specified
-    #[serde(flatten)]
+    // Issue https://github.com/teloxide/teloxide/issues/1135
+    #[serde(with = "crate::types::msg_id_as_int")]
     pub message_id: MessageId,
     /// If the message to be replied to is from a different chat, unique
     /// identifier for the chat or username of the channel (in the format
diff --git a/crates/teloxide/Cargo.toml b/crates/teloxide/Cargo.toml
index c693fa82..30666195 100644
--- a/crates/teloxide/Cargo.toml
+++ b/crates/teloxide/Cargo.toml
@@ -77,7 +77,8 @@ full = [
 
 
 [dependencies]
-teloxide-core = { version = "0.10", default-features = false }
+# replace me by the actual version when release, and return path when it's time to make 0-day fixes
+teloxide-core = { path = "../../crates/teloxide-core", default-features = false }
 teloxide-macros = { version = "0.8", optional = true }
 
 serde_json = "1.0"