diff --git a/src/IdentityServer4.WsFederation/IdentityServer4.WsFederation.csproj b/src/IdentityServer4.WsFederation/IdentityServer4.WsFederation.csproj
index a102eb6..45ba9c3 100644
--- a/src/IdentityServer4.WsFederation/IdentityServer4.WsFederation.csproj
+++ b/src/IdentityServer4.WsFederation/IdentityServer4.WsFederation.csproj
@@ -19,7 +19,7 @@
 
   <ItemGroup>
     <PackageReference Include="IdentityServer4" Version="2.4.0" />
-    <PackageReference Include="Microsoft.AspNetCore.App" Version="2.1.11" />
+    <PackageReference Include="Microsoft.AspNetCore.App" Version="2.1.15" />
     <PackageReference Include="Microsoft.IdentityModel.Protocols.WsFederation" Version="5.4.0" />
   </ItemGroup>