diff --git a/CHANGELOG.md b/CHANGELOG.md
index ae179b83..5ef432d5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -20,8 +20,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Changed
 
 - Use `url::Url` for urls, use `chrono::DateTime<Utc>` for dates in types ([#115][pr115])
+- Mark `ApiError` as `non_exhaustive` ([#125][pr125])
 
 [pr115]: https://github.com/teloxide/teloxide-core/pull/115
+[pr125]: https://github.com/teloxide/teloxide-core/pull/125
 
 ### Fixed
 
diff --git a/src/errors.rs b/src/errors.rs
index 67ce9f8d..d50945e5 100644
--- a/src/errors.rs
+++ b/src/errors.rs
@@ -61,6 +61,7 @@ pub enum RequestError {
 /// A kind of an API error.
 #[derive(Debug, Deserialize, PartialEq, Hash, Eq, Clone)]
 #[serde(field_identifier)]
+#[non_exhaustive]
 pub enum ApiError {
     /// Occurs when the bot tries to send message to user who blocked the bot.
     #[serde(rename = "Forbidden: bot was blocked by the user")]