diff --git a/lib/models/content/avatar.dart b/lib/models/content/avatar.dart
index a5ce877..9efdb64 100644
--- a/lib/models/content/avatar.dart
+++ b/lib/models/content/avatar.dart
@@ -9,6 +9,9 @@ part "avatar.g.dart";
 class const AvatarContent({final ImageInfo? info, final Uri? url})
     extends Content
     with _$AvatarContent {
+  @override
+  Map<String, Object?> toJson() => _$AvatarContentToJson(this);
+
   factory AvatarContent.fromJson(Map<String, Object?> json) =>
       _$AvatarContentFromJson(json);
 }
diff --git a/lib/models/content/canonical_alias.dart b/lib/models/content/canonical_alias.dart
index f8bca3a..058c007 100644
--- a/lib/models/content/canonical_alias.dart
+++ b/lib/models/content/canonical_alias.dart
@@ -10,6 +10,9 @@ class const CanonicalAliasContent({
   @JsonKey(includeIfNull: false) final String? alias,
   final ISet<String> altAliases = const .empty(),
 }) extends Content with _$CanonicalAliasContent {
+  @override
+  Map<String, Object?> toJson() => _$CanonicalAliasContentToJson(this);
+
   factory CanonicalAliasContent.fromJson(Map<String, Object?> json) =>
       _$CanonicalAliasContentFromJson(json);
 }
diff --git a/lib/models/content/create.dart b/lib/models/content/create.dart
index 18353df..1f9f125 100644
--- a/lib/models/content/create.dart
+++ b/lib/models/content/create.dart
@@ -14,6 +14,9 @@ class const CreateContent({
   final String roomVersion = "1",
   @JsonKey(unknownEnumValue: RoomType.room) final RoomType? type,
 }) extends Content with _$CreateContent {
+  @override
+  Map<String, Object?> toJson() => _$CreateContentToJson(this);
+
   factory CreateContent.fromJson(Map<String, Object?> json) =>
       _$CreateContentFromJson(json);
 }
diff --git a/lib/models/content/encryption.dart b/lib/models/content/encryption.dart
index 5839132..cb7f1cd 100644
--- a/lib/models/content/encryption.dart
+++ b/lib/models/content/encryption.dart
@@ -10,6 +10,9 @@ class const EncryptionContent({
   @JsonKey(name: "rotation_period_ms") final int rotationPeriodMS = 604800000,
   @JsonKey(name: "rotation_period_msgs") final int rotationPeriodMessages = 100,
 }) extends Content with _$EncryptionContent {
+  @override
+  Map<String, Object?> toJson() => _$EncryptionContentToJson(this);
+
   factory EncryptionContent.fromJson(Map<String, Object?> json) =>
       _$EncryptionContentFromJson(json);
 }
diff --git a/lib/models/content/history_visibility.dart b/lib/models/content/history_visibility.dart
index f44fc91..516cac8 100644
--- a/lib/models/content/history_visibility.dart
+++ b/lib/models/content/history_visibility.dart
@@ -9,6 +9,9 @@ class const HistoryVisibilityContent({
   @JsonKey(unknownEnumValue: HistoryVisibility.unknown)
   required final HistoryVisibility historyVisibility,
 }) extends Content with _$HistoryVisibilityContent {
+  @override
+  Map<String, Object?> toJson() => _$HistoryVisibilityContentToJson(this);
+
   factory HistoryVisibilityContent.fromJson(Map<String, Object?> json) =>
       _$HistoryVisibilityContentFromJson(json);
 }
diff --git a/lib/models/content/image_pack.dart b/lib/models/content/image_pack.dart
index 93e9835..9668fbe 100644
--- a/lib/models/content/image_pack.dart
+++ b/lib/models/content/image_pack.dart
@@ -22,6 +22,9 @@ class const ImagePackContent({
     },
   );
 
+  @override
+  Map<String, Object?> toJson() => _$ImagePackContentToJson(this);
+
   factory ImagePackContent.fromJson(Map<String, Object?> json) =>
       _$ImagePackContentFromJson(json);
 }
diff --git a/lib/models/content/join_rules.dart b/lib/models/content/join_rules.dart
index 4eb09f7..4f1a929 100644
--- a/lib/models/content/join_rules.dart
+++ b/lib/models/content/join_rules.dart
@@ -11,6 +11,9 @@ class const JoinRulesContent({
   @JsonKey(unknownEnumValue: JoinRule.unknown) required final JoinRule joinRule,
   final ISet<AllowCondition> allow = const .empty(),
 }) extends Content with _$JoinRulesContent {
+  @override
+  Map<String, Object?> toJson() => _$JoinRulesContentToJson(this);
+
   factory JoinRulesContent.fromJson(Map<String, Object?> json) =>
       _$JoinRulesContentFromJson(json);
 }
diff --git a/lib/models/content/membership.dart b/lib/models/content/membership.dart
index 3e8d181..e082bf6 100644
--- a/lib/models/content/membership.dart
+++ b/lib/models/content/membership.dart
@@ -18,6 +18,9 @@ class const MembershipContent({
   static String? displaynameFromJson(String? displayName) =>
       displayName?.isEmpty == true ? null : displayName;
 
+  @override
+  Map<String, Object?> toJson() => _$MembershipContentToJson(this);
+
   factory MembershipContent.fromJson(Map<String, Object?> json) =>
       _$MembershipContentFromJson(json);
 }
diff --git a/lib/models/content/name.dart b/lib/models/content/name.dart
index 6f53eb5..74f583d 100644
--- a/lib/models/content/name.dart
+++ b/lib/models/content/name.dart
@@ -8,6 +8,9 @@ part "name.g.dart";
 class const NameContent({required final String name})
     extends Content
     with _$NameContent {
+  @override
+  Map<String, Object?> toJson() => _$NameContentToJson(this);
+
   factory NameContent.fromJson(Map<String, Object?> json) =>
       _$NameContentFromJson(json);
 }
diff --git a/lib/models/content/pinned_events.dart b/lib/models/content/pinned_events.dart
index 7f309c4..cf322af 100644
--- a/lib/models/content/pinned_events.dart
+++ b/lib/models/content/pinned_events.dart
@@ -9,6 +9,9 @@ part "pinned_events.g.dart";
 class const PinnedEventsContent({
   @JsonKey(name: "pinned") final IList<String> pinnedEvents = const .empty(),
 }) extends Content with _$PinnedEventsContent {
+  @override
+  Map<String, Object?> toJson() => _$PinnedEventsContentToJson(this);
+
   factory PinnedEventsContent.fromJson(Map<String, Object?> json) =>
       _$PinnedEventsContentFromJson(json);
 }
diff --git a/lib/models/content/power_levels.dart b/lib/models/content/power_levels.dart
index c902534..cdffd68 100644
--- a/lib/models/content/power_levels.dart
+++ b/lib/models/content/power_levels.dart
@@ -18,6 +18,9 @@ class const PowerLevelsContent({
   final int stateDefault = 50,
   final int usersDefault = 0,
 }) extends Content with _$PowerLevelsContent {
+  @override
+  Map<String, Object?> toJson() => _$PowerLevelsContentToJson(this);
+
   factory PowerLevelsContent.fromJson(Map<String, Object?> json) =>
       _$PowerLevelsContentFromJson(json);
 }
diff --git a/lib/models/content/redaction.dart b/lib/models/content/redaction.dart
index 9b855f8..9864c1f 100644
--- a/lib/models/content/redaction.dart
+++ b/lib/models/content/redaction.dart
@@ -8,6 +8,9 @@ part "redaction.g.dart";
 class const RedactionContent({final String? reason, final String? redacts})
     extends Content
     with _$RedactionContent {
+  @override
+  Map<String, Object?> toJson() => _$RedactionContentToJson(this);
+
   factory RedactionContent.fromJson(Map<String, Object?> json) =>
       _$RedactionContentFromJson(json);
 }
diff --git a/lib/models/content/server_acl.dart b/lib/models/content/server_acl.dart
index 1bfcfdb..3c33072 100644
--- a/lib/models/content/server_acl.dart
+++ b/lib/models/content/server_acl.dart
@@ -11,6 +11,9 @@ class const ServerACLContent({
   final IList<String> deny = const .empty(),
   final bool allowIpLiterals = true,
 }) extends Content with _$ServerACLContent {
+  @override
+  Map<String, Object?> toJson() => _$ServerACLContentToJson(this);
+
   factory ServerACLContent.fromJson(Map<String, Object?> json) =>
       _$ServerACLContentFromJson(json);
 }
diff --git a/lib/models/content/sticker.dart b/lib/models/content/sticker.dart
index 2b3e0fa..a47a576 100644
--- a/lib/models/content/sticker.dart
+++ b/lib/models/content/sticker.dart
@@ -11,6 +11,9 @@ class const StickerContent({
   required final ImageInfo info,
   required final Uri url,
 }) extends Content with _$StickerContent {
+  @override
+  Map<String, Object?> toJson() => _$StickerContentToJson(this);
+
   factory StickerContent.fromJson(Map<String, Object?> json) =>
       _$StickerContentFromJson(json);
 }
diff --git a/lib/models/content/topic.dart b/lib/models/content/topic.dart
index 13370f4..cd187fa 100644
--- a/lib/models/content/topic.dart
+++ b/lib/models/content/topic.dart
@@ -11,6 +11,9 @@ class const TopicContent({
   required final String topic,
   @JsonKey(name: "m.topic") final TopicContentBlock? content,
 }) extends Content with _$TopicContent {
+  @override
+  Map<String, Object?> toJson() => _$TopicContentToJson(this);
+
   factory TopicContent.fromJson(Map<String, Object?> json) =>
       _$TopicContentFromJson(json);
 }