diff --git a/crates/ruma-client-api/src/account/register.rs b/crates/ruma-client-api/src/account/register.rs
index fca2a2b1..93239cee 100644
--- a/crates/ruma-client-api/src/account/register.rs
+++ b/crates/ruma-client-api/src/account/register.rs
@@ -169,7 +169,7 @@ pub mod v3 {
 }
 
 /// The kind of account being registered.
-#[derive(Clone, Debug, PartialEq, Eq, Deserialize, Serialize)]
+#[derive(Clone, Debug, Default, PartialEq, Eq, Deserialize, Serialize)]
 #[serde(rename_all = "snake_case")]
 #[cfg_attr(not(feature = "unstable-exhaustive-types"), non_exhaustive)]
 pub enum RegistrationKind {
@@ -179,15 +179,10 @@ pub enum RegistrationKind {
     Guest,
 
     /// A regular user account
+    #[default]
     User,
 }
 
-impl Default for RegistrationKind {
-    fn default() -> Self {
-        Self::User
-    }
-}
-
 /// The login type.
 #[derive(Clone, Debug, PartialEq, Eq, Deserialize, Serialize)]
 #[cfg_attr(not(feature = "unstable-exhaustive-types"), non_exhaustive)]
diff --git a/crates/ruma-client-api/src/filter.rs b/crates/ruma-client-api/src/filter.rs
index 56005b27..1e2a2f67 100644
--- a/crates/ruma-client-api/src/filter.rs
+++ b/crates/ruma-client-api/src/filter.rs
@@ -21,11 +21,12 @@ pub use self::{lazy_load::LazyLoadOptions, url::UrlFilter};
 
 /// Format to use for returned events.
 #[doc = include_str!(concat!(env!("CARGO_MANIFEST_DIR"), "/src/doc/string_enum.md"))]
-#[derive(Clone, Debug, PartialEq, Eq, StringEnum)]
+#[derive(Clone, Debug, Default, PartialEq, Eq, StringEnum)]
 #[ruma_enum(rename_all = "snake_case")]
 #[non_exhaustive]
 pub enum EventFormat {
     /// Client format, as described in the Client API.
+    #[default]
     Client,
 
     /// Raw events from federation.
@@ -35,12 +36,6 @@ pub enum EventFormat {
     _Custom(PrivOwnedStr),
 }
 
-impl Default for EventFormat {
-    fn default() -> Self {
-        Self::Client
-    }
-}
-
 /// Filters to be applied to room events.
 #[derive(Clone, Debug, Default, Incoming, Serialize)]
 #[cfg_attr(not(feature = "unstable-exhaustive-types"), non_exhaustive)]
diff --git a/crates/ruma-client-api/src/filter/lazy_load.rs b/crates/ruma-client-api/src/filter/lazy_load.rs
index adfdb49d..bd6e3891 100644
--- a/crates/ruma-client-api/src/filter/lazy_load.rs
+++ b/crates/ruma-client-api/src/filter/lazy_load.rs
@@ -4,11 +4,12 @@ use serde::{ser::SerializeStruct as _, Deserialize, Serialize, Serializer};
 /// supported endpoints
 ///
 /// [lazy-loading]: https://spec.matrix.org/v1.2/client-server-api/#lazy-loading-room-members
-#[derive(Clone, Copy, Debug, Eq, PartialEq, Deserialize)]
+#[derive(Clone, Copy, Debug, Default, Eq, PartialEq, Deserialize)]
 #[serde(from = "LazyLoadJsonRepr")]
 #[allow(clippy::exhaustive_enums)]
 pub enum LazyLoadOptions {
     /// Disables lazy-loading of membership events.
+    #[default]
     Disabled,
 
     /// Enables lazy-loading of events.
@@ -28,13 +29,6 @@ impl LazyLoadOptions {
     }
 }
 
-impl Default for LazyLoadOptions {
-    /// `LazyLoadOptions::Disabled`
-    fn default() -> Self {
-        Self::Disabled
-    }
-}
-
 impl Serialize for LazyLoadOptions {
     fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
     where
diff --git a/crates/ruma-client-api/src/room.rs b/crates/ruma-client-api/src/room.rs
index 352156ec..34da3216 100644
--- a/crates/ruma-client-api/src/room.rs
+++ b/crates/ruma-client-api/src/room.rs
@@ -12,7 +12,7 @@ use crate::PrivOwnedStr;
 
 /// Whether or not a newly created room will be listed in the room directory.
 #[doc = include_str!(concat!(env!("CARGO_MANIFEST_DIR"), "/src/doc/string_enum.md"))]
-#[derive(Clone, Debug, PartialEq, Eq, StringEnum)]
+#[derive(Clone, Debug, Default, PartialEq, Eq, StringEnum)]
 #[ruma_enum(rename_all = "snake_case")]
 #[non_exhaustive]
 pub enum Visibility {
@@ -20,14 +20,9 @@ pub enum Visibility {
     Public,
 
     /// Indicates that the room will not be shown in the published room list.
+    #[default]
     Private,
 
     #[doc(hidden)]
     _Custom(PrivOwnedStr),
 }
-
-impl Default for Visibility {
-    fn default() -> Self {
-        Self::Private
-    }
-}
diff --git a/crates/ruma-client-api/src/space.rs b/crates/ruma-client-api/src/space.rs
index c147e57b..57c00c33 100644
--- a/crates/ruma-client-api/src/space.rs
+++ b/crates/ruma-client-api/src/space.rs
@@ -142,7 +142,7 @@ impl From<SpaceHierarchyRoomsChunkInit> for SpaceHierarchyRoomsChunk {
 /// enum does not hold the conditions for joining restricted rooms. Instead, the server is assumed
 /// to only return rooms the user is allowed to join in a space hierarchy listing response.
 #[doc = include_str!(concat!(env!("CARGO_MANIFEST_DIR"), "/src/doc/string_enum.md"))]
-#[derive(Clone, Debug, PartialEq, Eq, StringEnum)]
+#[derive(Clone, Debug, Default, PartialEq, Eq, StringEnum)]
 #[ruma_enum(rename_all = "snake_case")]
 #[cfg_attr(not(feature = "unstable-exhaustive-types"), non_exhaustive)]
 pub enum SpaceRoomJoinRule {
@@ -171,14 +171,9 @@ pub enum SpaceRoomJoinRule {
     KnockRestricted,
 
     /// Anyone can join the room without any prior action.
+    #[default]
     Public,
 
     #[doc(hidden)]
     _Custom(PrivOwnedStr),
 }
-
-impl Default for SpaceRoomJoinRule {
-    fn default() -> Self {
-        SpaceRoomJoinRule::Public
-    }
-}
diff --git a/crates/ruma-common/src/canonical_json/value.rs b/crates/ruma-common/src/canonical_json/value.rs
index 90812fac..875026c5 100644
--- a/crates/ruma-common/src/canonical_json/value.rs
+++ b/crates/ruma-common/src/canonical_json/value.rs
@@ -12,7 +12,7 @@ pub type CanonicalJsonObject = BTreeMap<String, CanonicalJsonValue>;
 
 /// Represents a canonical JSON value as per the Matrix specification.
 #[cfg(feature = "canonical-json")]
-#[derive(Clone, Eq, PartialEq)]
+#[derive(Clone, Default, Eq, PartialEq)]
 #[allow(clippy::exhaustive_enums)]
 pub enum CanonicalJsonValue {
     /// Represents a JSON null value.
@@ -22,6 +22,7 @@ pub enum CanonicalJsonValue {
     /// # use ruma_common::CanonicalJsonValue;
     /// let v: CanonicalJsonValue = json!(null).try_into().unwrap();
     /// ```
+    #[default]
     Null,
 
     /// Represents a JSON boolean.
@@ -155,12 +156,6 @@ impl CanonicalJsonValue {
     }
 }
 
-impl Default for CanonicalJsonValue {
-    fn default() -> Self {
-        Self::Null
-    }
-}
-
 impl fmt::Debug for CanonicalJsonValue {
     fn fmt(&self, formatter: &mut fmt::Formatter<'_>) -> fmt::Result {
         match *self {
diff --git a/crates/ruma-common/src/directory.rs b/crates/ruma-common/src/directory.rs
index f9e34f98..4ab91f8c 100644
--- a/crates/ruma-common/src/directory.rs
+++ b/crates/ruma-common/src/directory.rs
@@ -185,7 +185,7 @@ impl<'a> Default for RoomNetwork<'a> {
 
 /// The rule used for users wishing to join a public room.
 #[doc = include_str!(concat!(env!("CARGO_MANIFEST_DIR"), "/src/doc/string_enum.md"))]
-#[derive(Clone, Debug, PartialEq, Eq, StringEnum)]
+#[derive(Clone, Debug, Default, PartialEq, Eq, StringEnum)]
 #[ruma_enum(rename_all = "snake_case")]
 #[cfg_attr(not(feature = "unstable-exhaustive-types"), non_exhaustive)]
 pub enum PublicRoomJoinRule {
@@ -193,18 +193,13 @@ pub enum PublicRoomJoinRule {
     Knock,
 
     /// Anyone can join the room without any prior action.
+    #[default]
     Public,
 
     #[doc(hidden)]
     _Custom(PrivOwnedStr),
 }
 
-impl Default for PublicRoomJoinRule {
-    fn default() -> Self {
-        Self::Public
-    }
-}
-
 /// An enum of possible room types to filter.
 ///
 /// This type can hold an arbitrary string. To build this with a custom value, convert it from an
diff --git a/crates/ruma-common/src/events/call/hangup.rs b/crates/ruma-common/src/events/call/hangup.rs
index 478e1f84..da970489 100644
--- a/crates/ruma-common/src/events/call/hangup.rs
+++ b/crates/ruma-common/src/events/call/hangup.rs
@@ -86,6 +86,7 @@ impl CallHangupEventContent {
 /// `invite_timeout` for when the other party did not answer in time.
 #[doc = include_str!(concat!(env!("CARGO_MANIFEST_DIR"), "/src/doc/string_enum.md"))]
 #[derive(Clone, Debug, PartialEq, Eq, StringEnum)]
+#[cfg_attr(feature = "unstable-msc2746", derive(Default))]
 #[ruma_enum(rename_all = "snake_case")]
 #[non_exhaustive]
 pub enum Reason {
@@ -105,6 +106,7 @@ pub enum Reason {
 
     /// The user chose to end the call.
     #[cfg(feature = "unstable-msc2746")]
+    #[default]
     UserHangup,
 
     /// The client was unable to start capturing media in such a way as it is unable to continue
@@ -146,10 +148,3 @@ impl Reason {
         Some(Self::default())
     }
 }
-
-#[cfg(feature = "unstable-msc2746")]
-impl Default for Reason {
-    fn default() -> Self {
-        Self::UserHangup
-    }
-}
diff --git a/crates/ruma-common/src/events/location.rs b/crates/ruma-common/src/events/location.rs
index 783caa6d..5851ef8a 100644
--- a/crates/ruma-common/src/events/location.rs
+++ b/crates/ruma-common/src/events/location.rs
@@ -191,19 +191,14 @@ impl AssetContent {
 
 /// The type of an asset.
 #[doc = include_str!(concat!(env!("CARGO_MANIFEST_DIR"), "/src/doc/string_enum.md"))]
-#[derive(Clone, Debug, PartialEq, Eq, PartialOrd, Ord, StringEnum)]
+#[derive(Clone, Debug, Default, PartialEq, Eq, PartialOrd, Ord, StringEnum)]
 #[non_exhaustive]
 pub enum AssetType {
     /// The asset is the sender of the event.
+    #[default]
     #[ruma_enum(rename = "m.self")]
     Self_,
 
     #[doc(hidden)]
     _Custom(PrivOwnedStr),
 }
-
-impl Default for AssetType {
-    fn default() -> Self {
-        Self::Self_
-    }
-}
diff --git a/crates/ruma-common/src/events/poll/start.rs b/crates/ruma-common/src/events/poll/start.rs
index 03c154fd..d2b7e585 100644
--- a/crates/ruma-common/src/events/poll/start.rs
+++ b/crates/ruma-common/src/events/poll/start.rs
@@ -74,10 +74,11 @@ impl PollStartContent {
 
 /// The kind of poll.
 #[doc = include_str!(concat!(env!("CARGO_MANIFEST_DIR"), "/src/doc/string_enum.md"))]
-#[derive(Clone, Debug, PartialEq, Eq, StringEnum)]
+#[derive(Clone, Debug, Default, PartialEq, Eq, StringEnum)]
 #[cfg_attr(not(feature = "unstable-exhaustive-types"), non_exhaustive)]
 pub enum PollKind {
     /// The results are revealed once the poll is closed.
+    #[default]
     #[ruma_enum(rename = "org.matrix.msc3381.poll.undisclosed", alias = "m.poll.undisclosed")]
     Undisclosed,
 
@@ -89,12 +90,6 @@ pub enum PollKind {
     _Custom(PrivOwnedStr),
 }
 
-impl Default for PollKind {
-    fn default() -> Self {
-        Self::Undisclosed
-    }
-}
-
 /// The answers to a poll.
 ///
 /// Must include between 1 and 20 `PollAnswer`s.
diff --git a/crates/ruma-common/src/presence.rs b/crates/ruma-common/src/presence.rs
index db1739f6..9bb0e84a 100644
--- a/crates/ruma-common/src/presence.rs
+++ b/crates/ruma-common/src/presence.rs
@@ -6,7 +6,7 @@ use crate::{serde::StringEnum, PrivOwnedStr};
 
 /// A description of a user's connectivity and availability for chat.
 #[doc = include_str!(concat!(env!("CARGO_MANIFEST_DIR"), "/src/doc/string_enum.md"))]
-#[derive(Clone, Debug, PartialEq, Eq, StringEnum)]
+#[derive(Clone, Debug, Default, PartialEq, Eq, StringEnum)]
 #[ruma_enum(rename_all = "snake_case")]
 #[non_exhaustive]
 pub enum PresenceState {
@@ -14,6 +14,7 @@ pub enum PresenceState {
     Offline,
 
     /// Connected to the service.
+    #[default]
     Online,
 
     /// Connected to the service but not available for chat.
@@ -23,12 +24,6 @@ pub enum PresenceState {
     _Custom(PrivOwnedStr),
 }
 
-impl Default for PresenceState {
-    fn default() -> Self {
-        Self::Online
-    }
-}
-
 impl Default for &'_ PresenceState {
     fn default() -> Self {
         &PresenceState::Online
diff --git a/crates/ruma-common/src/push/condition/room_member_count_is.rs b/crates/ruma-common/src/push/condition/room_member_count_is.rs
index f97b68cf..3ac737a6 100644
--- a/crates/ruma-common/src/push/condition/room_member_count_is.rs
+++ b/crates/ruma-common/src/push/condition/room_member_count_is.rs
@@ -10,10 +10,11 @@ use serde::{Deserialize, Deserializer, Serialize, Serializer};
 /// One of `==`, `<`, `>`, `>=` or `<=`.
 ///
 /// Used by `RoomMemberCountIs`. Defaults to `==`.
-#[derive(Copy, Clone, Debug, Eq, PartialEq)]
+#[derive(Copy, Clone, Debug, Default, Eq, PartialEq)]
 #[allow(clippy::exhaustive_enums)]
 pub enum ComparisonOperator {
     /// Equals
+    #[default]
     Eq,
 
     /// Less than
@@ -29,12 +30,6 @@ pub enum ComparisonOperator {
     Le,
 }
 
-impl Default for ComparisonOperator {
-    fn default() -> Self {
-        ComparisonOperator::Eq
-    }
-}
-
 /// A decimal integer optionally prefixed by one of `==`, `<`, `>`, `>=` or `<=`.
 ///
 /// A prefix of `<` matches rooms where the member count is strictly less than the given
diff --git a/crates/ruma-push-gateway-api/src/send_event_notification.rs b/crates/ruma-push-gateway-api/src/send_event_notification.rs
index 1a1e463b..e56d849b 100644
--- a/crates/ruma-push-gateway-api/src/send_event_notification.rs
+++ b/crates/ruma-push-gateway-api/src/send_event_notification.rs
@@ -148,11 +148,12 @@ pub mod v1 {
     /// This type can hold an arbitrary string. To build this with a custom value, convert it from a
     /// string with `::from() / .into()`. To check for values that are not available as a
     /// documented variant here, use its string representation, obtained through `.as_str()`.
-    #[derive(Clone, Debug, PartialEq, Eq, StringEnum)]
+    #[derive(Clone, Debug, Default, PartialEq, Eq, StringEnum)]
     #[ruma_enum(rename_all = "snake_case")]
     #[non_exhaustive]
     pub enum NotificationPriority {
         /// A high priority notification
+        #[default]
         High,
 
         /// A low priority notification
@@ -162,12 +163,6 @@ pub mod v1 {
         _Custom(PrivOwnedStr),
     }
 
-    impl Default for NotificationPriority {
-        fn default() -> Self {
-            Self::High
-        }
-    }
-
     /// Type for passing information about notification counts.
     #[derive(Clone, Debug, Default, Deserialize, Serialize)]
     #[cfg_attr(not(feature = "unstable-exhaustive-types"), non_exhaustive)]