2 files changed, 6 insertions, 1 deletions
diff --git a/LibMatrix.EventTypes/LibMatrix.EventTypes.csproj b/LibMatrix.EventTypes/LibMatrix.EventTypes.csproj
index 0924aba..682b91b 100644
--- a/LibMatrix.EventTypes/LibMatrix.EventTypes.csproj
+++ b/LibMatrix.EventTypes/LibMatrix.EventTypes.csproj
@@ -7,7 +7,7 @@
     </PropertyGroup>
 
     <ItemGroup>
-        <PackageReference Include="ArcaneLibs" Version="1.0.0-preview.20250419-174711" Condition="'$(Configuration)' == 'Release'" />
+        <PackageReference Include="ArcaneLibs" Version="1.0.0-preview.20250630-114950" Condition="'$(Configuration)' == 'Release'" />
         <ProjectReference Include="..\ArcaneLibs\ArcaneLibs\ArcaneLibs.csproj" Condition="'$(Configuration)' == 'Debug'"/>
     </ItemGroup>
 
diff --git a/LibMatrix.EventTypes/Spec/State/RoomInfo/RoomCreateEventContent.cs b/LibMatrix.EventTypes/Spec/State/RoomInfo/RoomCreateEventContent.cs
index 37b831a..8519889 100644
--- a/LibMatrix.EventTypes/Spec/State/RoomInfo/RoomCreateEventContent.cs
+++ b/LibMatrix.EventTypes/Spec/State/RoomInfo/RoomCreateEventContent.cs
@@ -12,9 +12,14 @@ public class RoomCreateEventContent : EventContent {
     [JsonPropertyName("room_version")]
     public string? RoomVersion { get; set; }
 
+    // missing in room version 11+
     [JsonPropertyName("creator")]
     public string? Creator { get; set; }
 
+    // v12+
+    [JsonPropertyName("additional_creators")]
+    public List<string>? AdditionalCreators { get; set; }
+
     [JsonPropertyName("m.federate")]
     public bool? Federate { get; set; }