diff --git a/simapp/app.go b/simapp/app.go
index 57cbb500f9..d8b04f4d75 100644
--- a/simapp/app.go
+++ b/simapp/app.go
@@ -350,6 +350,9 @@ func NewSimApp(
 		),
 	)
 
+	// Set legacy router for backwards compatibility with gov v1beta1
+	govKeeper.SetLegacyRouter(govRouter)
+
 	// RegisterUpgradeHandlers is used for registering any on-chain upgrades.
 	app.RegisterUpgradeHandlers()