diff --git a/app/app.go b/app/app.go
index 13838e47..04f7956e 100644
--- a/app/app.go
+++ b/app/app.go
@@ -913,6 +913,11 @@ func (app *App) registerUpgradeHandlers() {
 		return app.mm.RunMigrations(ctx, app.configurator, fromVM)
 	})
 
+	app.UpgradeKeeper.SetUpgradeHandler("v1.6.6", func(ctx sdk.Context, plan upgradetypes.Plan, fromVM module.VersionMap) (module.VersionMap, error) {
+		app.Logger().Info("Starting v1.6.6 upgrade")
+		return app.mm.RunMigrations(ctx, app.configurator, fromVM)
+	})
+
 	upgradeInfo, err := app.UpgradeKeeper.ReadUpgradeInfoFromDisk()
 	if err != nil {
 		panic(fmt.Sprintf("failed to read upgrade info from disk %s", err))
@@ -1015,7 +1020,7 @@ func (app *App) registerUpgradeHandlers() {
 		app.SetStoreLoader(upgradetypes.UpgradeStoreLoader(upgradeInfo.Height, &storeUpgrades))
 	}
 
-	if upgradeInfo.Name == "v1.6.5" && !app.UpgradeKeeper.IsSkipHeight(upgradeInfo.Height) {
+	if upgradeInfo.Name == "v1.6.6" && !app.UpgradeKeeper.IsSkipHeight(upgradeInfo.Height) {
 		storeUpgrades := storetypes.StoreUpgrades{}
 		app.SetStoreLoader(upgradetypes.UpgradeStoreLoader(upgradeInfo.Height, &storeUpgrades))
 	}