diff --git a/app/test/priority_test.go b/app/test/priority_test.go
index b615b8e9ac..da7936dd0d 100644
--- a/app/test/priority_test.go
+++ b/app/test/priority_test.go
@@ -52,7 +52,7 @@ func (s *PriorityTestSuite) SetupSuite() {
 	cfg := testnode.DefaultConfig().
 		WithFundedAccounts(s.accountNames...).
 		// use a long block time to guarantee that some transactions are included in the same block
-		WithBlockTime(time.Second)
+		WithTimeoutCommit(time.Second)
 
 	cctx, _, _ := testnode.NewNetwork(t, cfg)
 	s.cctx = cctx
diff --git a/app/test/square_size_test.go b/app/test/square_size_test.go
index 754a5d0adf..b7d147fe0d 100644
--- a/app/test/square_size_test.go
+++ b/app/test/square_size_test.go
@@ -49,7 +49,7 @@ func (s *SquareSizeIntegrationTest) SetupSuite() {
 
 	cfg := testnode.DefaultConfig().
 		WithModifiers(genesis.ImmediateProposals(s.ecfg.Codec)).
-		WithBlockTime(time.Second)
+		WithTimeoutCommit(time.Second)
 
 	cctx, rpcAddr, grpcAddr := testnode.NewNetwork(t, cfg)
 
diff --git a/pkg/appconsts/versioned_consts_test.go b/pkg/appconsts/versioned_consts_test.go
index 8f67d4cefd..249dd99805 100644
--- a/pkg/appconsts/versioned_consts_test.go
+++ b/pkg/appconsts/versioned_consts_test.go
@@ -106,12 +106,6 @@ func TestUpgradeHeightDelay(t *testing.T) {
 			version:                    v2.Version,
 			expectedUpgradeHeightDelay: v2.UpgradeHeightDelay,
 		},
-		{
-			name:                       "v2 upgrade delay on an arabica network other than arabica-11",
-			chainID:                    "arabica-11",
-			version:                    v2.Version,
-			expectedUpgradeHeightDelay: v3.UpgradeHeightDelay, // falls back to v3 because of arabica bug
-		},
 		{
 			name:                       "v2 upgrade delay on arabica",
 			chainID:                    "arabica-11",
diff --git a/test/txsim/run_test.go b/test/txsim/run_test.go
index 2dfa608574..d4cbdf22ba 100644
--- a/test/txsim/run_test.go
+++ b/test/txsim/run_test.go
@@ -151,7 +151,7 @@ func TestTxSimulator(t *testing.T) {
 func Setup(t testing.TB) (keyring.Keyring, string, string) {
 	t.Helper()
 
-	cfg := testnode.DefaultConfig().WithBlockTime(300 * time.Millisecond).WithFundedAccounts("txsim-master")
+	cfg := testnode.DefaultConfig().WithTimeoutCommit(300 * time.Millisecond).WithFundedAccounts("txsim-master")
 
 	cctx, rpcAddr, grpcAddr := testnode.NewNetwork(t, cfg)
 
@@ -165,7 +165,7 @@ func TestTxSimUpgrade(t *testing.T) {
 	cp := app.DefaultConsensusParams()
 	cp.Version.AppVersion = v2.Version
 	cfg := testnode.DefaultConfig().
-		WithBlockTime(300 * time.Millisecond).
+		WithTimeoutCommit(300 * time.Millisecond).
 		WithConsensusParams(cp).
 		WithFundedAccounts("txsim-master")
 	cctx, _, grpcAddr := testnode.NewNetwork(t, cfg)
diff --git a/test/util/testnode/config.go b/test/util/testnode/config.go
index fff1053494..76508f91d4 100644
--- a/test/util/testnode/config.go
+++ b/test/util/testnode/config.go
@@ -82,20 +82,10 @@ func (c *Config) WithSuppressLogs(sl bool) *Config {
 	return c
 }
 
-// WithBlockTime sets the block time and returns the Config.
-func (c *Config) WithBlockTime(d time.Duration) *Config {
-	c.TmConfig.Consensus.TimeoutCommit = d
-	creator := DefaultAppCreator(d)
-	c.WithAppCreator(creator)
-	return c
-}
-
-// Deprecated: use WithBlockTime instead. WithTimeoutCommit sets the timeout
-// commit in the cometBFT config and returns the Config. Warning, this won't
-// actually change the block time and is being deprecated.
+// WithTimeoutCommit sets the timeout commit in the cometBFT config and returns
+// the Config.
 func (c *Config) WithTimeoutCommit(d time.Duration) *Config {
-	c.TmConfig.Consensus.TimeoutCommit = d
-	return c
+	return c.WithAppCreator(DefaultAppCreator(WithTimeoutCommit(d)))
 }
 
 // WithFundedAccounts sets the genesis accounts and returns the Config.
@@ -142,7 +132,7 @@ func DefaultConfig() *Config {
 		WithTendermintConfig(DefaultTendermintConfig()).
 		WithAppConfig(DefaultAppConfig()).
 		WithAppOptions(DefaultAppOptions()).
-		WithAppCreator(DefaultAppCreator(time.Millisecond * 30)).
+		WithTimeoutCommit(time.Millisecond * 30).
 		WithSuppressLogs(true)
 }
 
@@ -181,7 +171,15 @@ func DefaultTendermintConfig() *tmconfig.Config {
 	return tmCfg
 }
 
-func DefaultAppCreator(blockTime time.Duration) srvtypes.AppCreator {
+type AppCreationOptions func(app *app.App)
+
+func WithTimeoutCommit(d time.Duration) AppCreationOptions {
+	return func(app *app.App) {
+		app.SetEndBlocker(wrapEndBlocker(app, d))
+	}
+}
+
+func DefaultAppCreator(opts ...AppCreationOptions) srvtypes.AppCreator {
 	return func(_ log.Logger, _ tmdb.DB, _ io.Writer, _ srvtypes.AppOptions) srvtypes.Application {
 		encodingConfig := encoding.MakeConfig(app.ModuleEncodingRegisters...)
 		app := app.New(
@@ -194,7 +192,11 @@ func DefaultAppCreator(blockTime time.Duration) srvtypes.AppCreator {
 			simapp.EmptyAppOptions{},
 			baseapp.SetMinGasPrices(fmt.Sprintf("%v%v", appconsts.DefaultMinGasPrice, app.BondDenom)),
 		)
-		app.SetEndBlocker(wrapEndBlocker(app, blockTime))
+
+		for _, opt := range opts {
+			opt(app)
+		}
+
 		return app
 	}
 }