diff --git a/src/STS/Controllers/ShibbolethController.cs b/src/STS/Controllers/ShibbolethController.cs
index 22e8781cfa6f1806dacfbb61866ca6cd4e189120..065ace040a7d3db786da12ffb18ca7325053a53a 100644
--- a/src/STS/Controllers/ShibbolethController.cs
+++ b/src/STS/Controllers/ShibbolethController.cs
@@ -89,10 +89,10 @@ namespace Coscine.Api.STS.Controllers
                 _rdfStoreConnector.RemoveMembershipData(userGraphName, organization);
 
                 // Reverse lookup...
-                var eduPersonScopedAffiliation = info.Principal.FindFirstValue(ShibbolethAttributeMapping.LabelMapping.FirstOrDefault(x => x.Value == "Entitlement").Key);
-                if (eduPersonScopedAffiliation.StartsWith("employee@")
+                var eduPersonScopedAffiliation = info.Principal.FindAll(ShibbolethAttributeMapping.LabelMapping.FirstOrDefault(x => x.Value == "Entitlement").Key);
+                if (eduPersonScopedAffiliation.Any(x => x.Value.StartsWith("employee@"))
                     // Check for test shib (employee user is actually member...).
-                    || (eduPersonScopedAffiliation.StartsWith("member@") && entityId == "https://login-test.rz.rwth-aachen.de/shibboleth"))
+                    || (eduPersonScopedAffiliation.Any(x => x.Value.StartsWith("member@") && entityId == "https://login-test.rz.rwth-aachen.de/shibboleth")))
                 {
                     // Add membership information.
                     _rdfStoreConnector.AddMemebershipData(userGraphName, organization);
diff --git a/src/STS/STS.csproj b/src/STS/STS.csproj
index 22d10451ce620f0bb2b79e81c88e1227833d41f7..812c1ff65277f35f57181dbcb9aa39b67f9d8a57 100644
--- a/src/STS/STS.csproj
+++ b/src/STS/STS.csproj
@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk.Web">
+<Project Sdk="Microsoft.NET.Sdk.Web">
   <PropertyGroup>
     <DebugType>full</DebugType>
     <AssemblyName>Coscine.Api.STS</AssemblyName>
@@ -20,7 +20,7 @@
     <PackageReference Include="Coscine.Action" Version="2.*-*" />
     <PackageReference Include="Coscine.ActiveDirectory" Version="2.*-*" />
     <PackageReference Include="Coscine.ApiCommons" Version="2.*-*" />
-    <PackageReference Include="Coscine.Metadata" Version="2.1.0-topic-1425-fhpri0003" />
+    <PackageReference Include="Coscine.Metadata" Version="2.*-*" />
     <PackageReference Include="Microsoft.AspNetCore.Identity.EntityFrameworkCore" Version="3.1.12" />
     <PackageReference Include="Microsoft.EntityFrameworkCore.InMemory" Version="3.1.12" />
     <PackageReference Include="Microsoft.IdentityModel.Tokens.Saml" Version="6.8.0" />