diff --git a/golang/cosmos/app/app.go b/golang/cosmos/app/app.go
index 5d887933de3a..4f8e3c6cc21e 100644
--- a/golang/cosmos/app/app.go
+++ b/golang/cosmos/app/app.go
@@ -50,6 +50,7 @@ import (
 	bankkeeper "github.com/cosmos/cosmos-sdk/x/bank/keeper"
 	banktypes "github.com/cosmos/cosmos-sdk/x/bank/types"
 
+	"cosmossdk.io/simapp"
 	distr "github.com/cosmos/cosmos-sdk/x/distribution"
 	distrclient "github.com/cosmos/cosmos-sdk/x/distribution/client"
 	distrkeeper "github.com/cosmos/cosmos-sdk/x/distribution/keeper"
@@ -80,7 +81,6 @@ import (
 	capabilitykeeper "github.com/cosmos/ibc-go/modules/capability/keeper"
 	capabilitytypes "github.com/cosmos/ibc-go/modules/capability/types"
 	ica "github.com/cosmos/ibc-go/v8/modules/apps/27-interchain-accounts"
-	"github.com/cosmos/ibc-go/v8/testing/simapp"
 
 	dbm "github.com/cometbft/cometbft-db"
 	icahost "github.com/cosmos/ibc-go/v8/modules/apps/27-interchain-accounts/host"
diff --git a/golang/cosmos/app/sim_test.go b/golang/cosmos/app/sim_test.go
index f8f8080da3b4..b94198a1ef3b 100644
--- a/golang/cosmos/app/sim_test.go
+++ b/golang/cosmos/app/sim_test.go
@@ -14,11 +14,11 @@ import (
 	"github.com/tendermint/tendermint/libs/log"
 	"github.com/tendermint/tendermint/libs/rand"
 
+	"cosmossdk.io/simapp"
 	"cosmossdk.io/store"
 	"github.com/cosmos/cosmos-sdk/baseapp"
 	simulation2 "github.com/cosmos/cosmos-sdk/types/simulation"
 	"github.com/cosmos/cosmos-sdk/x/simulation"
-	"github.com/cosmos/ibc-go/v8/testing/simapp"
 )
 
 func init() {
diff --git a/golang/cosmos/e2e_test/go.mod b/golang/cosmos/e2e_test/go.mod
index 249008e31f34..0b75756d1a53 100644
--- a/golang/cosmos/e2e_test/go.mod
+++ b/golang/cosmos/e2e_test/go.mod
@@ -1,6 +1,6 @@
 module github.com/Agoric/agoric-sdk/golang/cosmos/e2etest
 
-go 1.20
+go 1.21
 
 require (
 	github.com/agoric-labs/interchaintest/v6 v6.0.1-agoriclabs
diff --git a/golang/cosmos/go.mod b/golang/cosmos/go.mod
index c82e51d9f28f..096f8fc4d0f3 100644
--- a/golang/cosmos/go.mod
+++ b/golang/cosmos/go.mod
@@ -1,6 +1,6 @@
 module github.com/Agoric/agoric-sdk/golang/cosmos
 
-go 1.20
+go 1.21
 
 require (
 	cosmossdk.io/errors v1.0.0-beta.7
@@ -198,8 +198,6 @@ replace (
 	// Use our fork at least until post-v0.34.14 is released with
 	// https://github.com/tendermint/tendermint/issue/6899 resolved.
 	github.com/tendermint/tendermint => github.com/agoric-labs/cometbft v0.34.30-alpha.agoric.2
-	github.com/cosmos/cosmos-sdk/store => cosmossdk.io/store v1.1.1
-
 // For testing against a local cosmos-sdk, ibc-go, or cometbft
 // github.com/cosmos/cosmos-sdk => ../../../forks/cosmos-sdk
 // github.com/cosmos/ibc-go/v6 => ../../../forks/ibc-go/v6