diff --git a/CHANGELOG.md b/CHANGELOG.md
index 20208d1e..2ef69f61 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,18 +1,22 @@
 # [unreleased]
 
+Breaking changes:
+
+* Make `avatar_url` in `r0::profile::set_avatar_url::Request` an `Option`
+
 # 0.9.0
 
 Bug fixes:
 
 * Fix (de)serialization for `r0::media::get_content_thumnail::Response`
 * Make `r0::device::get_devices::Response::devices` public
-* Change `r0::device::Device` fields according to the spec
 
 Breaking changes:
 
 * The `event_id` in the response for the message and state sending endpoints is now required
   * r0.6.0 doesn't say they are required, but this has been fixed for the next version of the spec
 * Updated the type of `r0::sync::sync_events::DeviceLists` fields
+* Change `r0::device::Device` fields according to the spec
 
 Improvements:
 
diff --git a/src/r0/profile/set_avatar_url.rs b/src/r0/profile/set_avatar_url.rs
index b48c4a2e..b6d6064e 100644
--- a/src/r0/profile/set_avatar_url.rs
+++ b/src/r0/profile/set_avatar_url.rs
@@ -19,7 +19,9 @@ ruma_api! {
         pub user_id: UserId,
 
         /// The new avatar URL for the user.
-        pub avatar_url: String,
+        ///
+        /// `None` is used to unset the avatar.
+        pub avatar_url: Option<String>,
     }
 
     response {}