diff --git a/golang/cosmos/app/upgrade.go b/golang/cosmos/app/upgrade.go
index 12cd6eb4a775..69e3b6dc9528 100644
--- a/golang/cosmos/app/upgrade.go
+++ b/golang/cosmos/app/upgrade.go
@@ -92,6 +92,10 @@ func unreleasedUpgradeHandler(app *GaiaApp, targetUpgrade string) func(sdk.Conte
 			// Each CoreProposalStep runs sequentially, and can be constructed from
 			// one or more modules executing in parallel within the step.
 			CoreProposalSteps = []vm.CoreProposalStep{
+				vm.CoreProposalStepForModules(
+					// Upgrade Zoe (no now ZCF needed).
+					"@agoric/builders/scripts/vats/upgrade-zoe.js",
+				),
 				vm.CoreProposalStepForModules(
 					// Upgrade to new liveslots for repaired vow usage.
 					"@agoric/builders/scripts/vats/upgrade-orch-core.js",