diff --git a/Magis.School.ApiClient/Endpoints/Web/IApps.cs b/Magis.School.ApiClient/Endpoints/Web/IApps.cs
index 2ec46ea..c26b5d3 100644
--- a/Magis.School.ApiClient/Endpoints/Web/IApps.cs
+++ b/Magis.School.ApiClient/Endpoints/Web/IApps.cs
@@ -17,7 +17,8 @@ public interface IApps
         Task<DataAndAccessResponse<App>> GetAppAsync(string appName, [Query] string eventStreamId = null, [Query] bool checkExists = false,
             CancellationToken cancellationToken = default);
 
+        // TODO: Because of a bug in the server (backend#60) the api call fails when no empty json object is sent.
         [Post("/api/web/apps/{appName}/start")]
-        Task<string> StartAppAsync(string appName);
+        Task<string> StartAppAsync(string appName, [Body] Dictionary<string,string> empty);
     }
 }
diff --git a/Magis.School.ApiClient/Magis.School.ApiClient.csproj b/Magis.School.ApiClient/Magis.School.ApiClient.csproj
index 51f4bfb..12f0323 100644
--- a/Magis.School.ApiClient/Magis.School.ApiClient.csproj
+++ b/Magis.School.ApiClient/Magis.School.ApiClient.csproj
@@ -4,7 +4,7 @@
     <TargetFramework>netstandard2.0</TargetFramework>
     <AssemblyTitle>Magis School API-Client</AssemblyTitle>
     <Authors>Magis IT GmbH</Authors>
-    <Version>1.3.0</Version>
+    <Version>1.3.1</Version>
     <Description>C# client library for the Magis School API</Description>
     <PackageProjectUrl>https://github.com/magis-school/Magis.School.ApiClient</PackageProjectUrl>
     <PackageLicenseUrl>https://github.com/magis-school/Magis.School.ApiClient/blob/master/LICENSE</PackageLicenseUrl>