diff --git a/cmd/spike/main.go b/cmd/spike/main.go
index a3999c5..1a01ea3 100644
--- a/cmd/spike/main.go
+++ b/cmd/spike/main.go
@@ -108,7 +108,7 @@ func run(argv []string, cols, rows uint16, idleMS int, followHost, stdinPassthro
 	}
 	defer em.Close()
 
-	child, err := pty.Start(argv, nil, cols, rows)
+	child, err := pty.Start(argv, nil, "", cols, rows)
 	if err != nil {
 		return fmt.Errorf("pty: %w", err)
 	}
diff --git a/internal/harness/restart_persist_test.go b/internal/harness/restart_persist_test.go
index c278df5..658ed5b 100644
--- a/internal/harness/restart_persist_test.go
+++ b/internal/harness/restart_persist_test.go
@@ -23,9 +23,9 @@ func TestRestartRestoresUserCommandProcess(t *testing.T) {
 	}
 
 	sc := &Scenario{
-		Name: "restart_persist",
-		Cols: 120,
-		Rows: 40,
+		Name:  "restart_persist",
+		Cols:  120,
+		Rows:  40,
 		Trust: []string{"persist-target"},
 		Presets: ScenarioPresets{
 			Processes: []ScenarioPreset{{
@@ -143,7 +143,7 @@ func openSession(t *testing.T, env *testEnv, childEnv []string) *Session {
 	if err != nil {
 		t.Fatalf("vt emulator: %v", err)
 	}
-	p, err := pkgpty.Start([]string{env.PattermBin, "--project", env.ProjectDir}, childEnv, env.Cols, env.Rows)
+	p, err := pkgpty.Start([]string{env.PattermBin, "--project", env.ProjectDir}, childEnv, "", env.Cols, env.Rows)
 	if err != nil {
 		_ = em.Close()
 		t.Fatalf("pty start: %v", err)
diff --git a/internal/harness/session.go b/internal/harness/session.go
index 7928353..94cdf56 100644
--- a/internal/harness/session.go
+++ b/internal/harness/session.go
@@ -55,7 +55,7 @@ func NewCLI(opts Options) (*Session, error) {
 	if err != nil {
 		return nil, err
 	}
-	p, err := pkgpty.Start([]string{env.PattermBin, "--project", env.ProjectDir}, childEnv, env.Cols, env.Rows)
+	p, err := pkgpty.Start([]string{env.PattermBin, "--project", env.ProjectDir}, childEnv, "", env.Cols, env.Rows)
 	if err != nil {
 		_ = em.Close()
 		return nil, err