diff --git a/crates/ruma-common/src/events/content.rs b/crates/ruma-common/src/events/content.rs
index af07624e..f2de1e88 100644
--- a/crates/ruma-common/src/events/content.rs
+++ b/crates/ruma-common/src/events/content.rs
@@ -126,7 +126,7 @@ pub trait StateEventContent: EventContent<EventType = StateEventType> {
     type StateKey: AsRef<str> + Clone + fmt::Debug + DeserializeOwned + Serialize;
 
     /// The type of the event's `unsigned` field.
-    type Unsigned: Clone + fmt::Debug + Default + CanBeEmpty + StateUnsignedFromParts + Serialize;
+    type Unsigned: Clone + fmt::Debug + Default + CanBeEmpty + StateUnsignedFromParts;
 }
 
 /// Content of a redacted state event.
diff --git a/crates/ruma-common/src/events/room/member.rs b/crates/ruma-common/src/events/room/member.rs
index 50630a9a..8fea4b22 100644
--- a/crates/ruma-common/src/events/room/member.rs
+++ b/crates/ruma-common/src/events/room/member.rs
@@ -496,7 +496,7 @@ impl StrippedRoomMemberEvent {
 }
 
 /// Extra information about a message event that is not incorporated into the event's hash.
-#[derive(Clone, Debug, Default, Deserialize, Serialize)]
+#[derive(Clone, Debug, Default, Deserialize)]
 #[cfg_attr(not(feature = "unstable-exhaustive-types"), non_exhaustive)]
 pub struct RoomMemberUnsigned {
     /// The time in milliseconds that has elapsed since the event was sent.
@@ -504,26 +504,23 @@ pub struct RoomMemberUnsigned {
     /// This field is generated by the local homeserver, and may be incorrect if the local time on
     /// at least one of the two servers is out of sync, which can cause the age to either be
     /// negative or greater than it actually is.
-    #[serde(skip_serializing_if = "Option::is_none")]
     pub age: Option<Int>,
 
     /// The client-supplied transaction ID, if the client being given the event is the same one
     /// which sent it.
-    #[serde(skip_serializing_if = "Option::is_none")]
     pub transaction_id: Option<OwnedTransactionId>,
 
     /// Optional previous content of the event.
-    #[serde(skip_serializing_if = "Option::is_none")]
     pub prev_content: Option<RoomMemberEventContent>,
 
     /// State events to assist the receiver in identifying the room.
-    #[serde(default, skip_serializing_if = "Vec::is_empty")]
+    #[serde(default)]
     pub invite_room_state: Vec<Raw<AnyStrippedStateEvent>>,
 
     /// [Bundled aggregations] of related child events.
     ///
     /// [Bundled aggregations]: https://spec.matrix.org/v1.4/client-server-api/#aggregations
-    #[serde(rename = "m.relations", default, skip_serializing_if = "BundledRelations::is_empty")]
+    #[serde(rename = "m.relations", default)]
     pub relations: BundledRelations,
 }
 
diff --git a/crates/ruma-common/src/events/unsigned.rs b/crates/ruma-common/src/events/unsigned.rs
index ff20b843..ef65f289 100644
--- a/crates/ruma-common/src/events/unsigned.rs
+++ b/crates/ruma-common/src/events/unsigned.rs
@@ -1,5 +1,5 @@
 use js_int::Int;
-use serde::{Deserialize, Serialize};
+use serde::Deserialize;
 use serde_json::{from_str as from_json_str, value::RawValue as RawJsonValue};
 
 use super::{
@@ -11,7 +11,7 @@ use crate::{
 };
 
 /// Extra information about a message event that is not incorporated into the event's hash.
-#[derive(Clone, Debug, Default, Deserialize, Serialize)]
+#[derive(Clone, Debug, Default, Deserialize)]
 #[cfg_attr(not(feature = "unstable-exhaustive-types"), non_exhaustive)]
 pub struct MessageLikeUnsigned {
     /// The time in milliseconds that has elapsed since the event was sent.
@@ -19,18 +19,16 @@ pub struct MessageLikeUnsigned {
     /// This field is generated by the local homeserver, and may be incorrect if the local time on
     /// at least one of the two servers is out of sync, which can cause the age to either be
     /// negative or greater than it actually is.
-    #[serde(skip_serializing_if = "Option::is_none")]
     pub age: Option<Int>,
 
     /// The client-supplied transaction ID, if the client being given the event is the same one
     /// which sent it.
-    #[serde(skip_serializing_if = "Option::is_none")]
     pub transaction_id: Option<OwnedTransactionId>,
 
     /// [Bundled aggregations] of related child events.
     ///
     /// [Bundled aggregations]: https://spec.matrix.org/v1.4/client-server-api/#aggregations
-    #[serde(rename = "m.relations", default, skip_serializing_if = "BundledRelations::is_empty")]
+    #[serde(rename = "m.relations", default)]
     pub relations: BundledRelations,
 }
 
@@ -53,7 +51,7 @@ impl CanBeEmpty for MessageLikeUnsigned {
 }
 
 /// Extra information about a state event that is not incorporated into the event's hash.
-#[derive(Clone, Debug, Deserialize, Serialize)]
+#[derive(Clone, Debug, Deserialize)]
 #[cfg_attr(not(feature = "unstable-exhaustive-types"), non_exhaustive)]
 pub struct StateUnsigned<C: StateEventContent> {
     /// The time in milliseconds that has elapsed since the event was sent.
@@ -61,22 +59,19 @@ pub struct StateUnsigned<C: StateEventContent> {
     /// This field is generated by the local homeserver, and may be incorrect if the local time on
     /// at least one of the two servers is out of sync, which can cause the age to either be
     /// negative or greater than it actually is.
-    #[serde(skip_serializing_if = "Option::is_none")]
     pub age: Option<Int>,
 
     /// The client-supplied transaction ID, if the client being given the event is the same one
     /// which sent it.
-    #[serde(skip_serializing_if = "Option::is_none")]
     pub transaction_id: Option<OwnedTransactionId>,
 
     /// Optional previous content of the event.
-    #[serde(skip_serializing_if = "Option::is_none")]
     pub prev_content: Option<C>,
 
     /// [Bundled aggregations] of related child events.
     ///
     /// [Bundled aggregations]: https://spec.matrix.org/v1.4/client-server-api/#aggregations
-    #[serde(rename = "m.relations", default, skip_serializing_if = "BundledRelations::is_empty")]
+    #[serde(rename = "m.relations", default)]
     pub relations: BundledRelations,
 }