diff --git a/Tekla.Extension/Tekla.Extension.nuspec b/Tekla.Extension/Tekla.Extension.nuspec
index 2e76206..a8b7f0d 100644
--- a/Tekla.Extension/Tekla.Extension.nuspec
+++ b/Tekla.Extension/Tekla.Extension.nuspec
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<package xmlns="http://schemas.nuget.org/2006/v3">
+<package xmlns="http://schemas.microsoft.com/packaging/2013/05/nuspec.xsd">
   <metadata>
     <id>$id$</id>
     <version>$version$</version>