diff --git a/build/NuSpecs/UmbracoCms.Core.nuspec b/build/NuSpecs/UmbracoCms.Core.nuspec
index b8a08f4ff9..2b1c98009d 100644
--- a/build/NuSpecs/UmbracoCms.Core.nuspec
+++ b/build/NuSpecs/UmbracoCms.Core.nuspec
@@ -20,6 +20,7 @@
       <dependency id="Microsoft.AspNet.Mvc" version="[5.2.3,6.0.0)" />
       <dependency id="Microsoft.AspNet.WebApi" version="[5.2.3,6.0.0)" />
       <dependency id="Microsoft.AspNet.Identity.Owin" version="[2.2.1, 3.0.0)" />
+      <dependency id="Microsoft.AspNet.SignalR.Core" version="[2.2.1, 3.0.0)" />
       <dependency id="Microsoft.Owin.Security.Cookies" version="[3.0.1, 4.0.0)" />
       <dependency id="Microsoft.Owin.Security.OAuth" version="[3.0.1, 4.0.0)" />
       <dependency id="Microsoft.Owin.Host.SystemWeb" version="[3.0.1, 4.0.0)" />