diff --git a/Sources/SKSwiftPMWorkspace/SwiftPMBuildSystem.swift b/Sources/SKSwiftPMWorkspace/SwiftPMBuildSystem.swift
index 09c8ad92b..d8ce43a90 100644
--- a/Sources/SKSwiftPMWorkspace/SwiftPMBuildSystem.swift
+++ b/Sources/SKSwiftPMWorkspace/SwiftPMBuildSystem.swift
@@ -211,6 +211,7 @@ public actor SwiftPMBuildSystem {
 
     self.modulesGraph = try ModulesGraph(
       rootPackages: [],
+      packages: IdentifiableSet(),
       dependencies: [],
       binaryArtifacts: [:]
     )