Decision diagrams (DDs) have made their way into Petri net (PN) tools either in the form of new tools (usually designed from scratch to use DDs) or as enhancements to existing tools. This paper describes how an existing and established tool (GreatSPN) has been enhanced through the use of DDs provided by an existing open-source library (Meddly). We benchmark the enhanced tool and discuss lessons learned while integrating DDs into GreatSPN. Category: tool paper