diff --git a/auth/auth_ui/cli.go b/auth/auth_ui/cli.go
index db8d1f75..b5b79799 100644
--- a/auth/auth_ui/cli.go
+++ b/auth/auth_ui/cli.go
@@ -109,3 +109,9 @@ func prompt(w io.Writer, prompt string, readlnFn func(*os.File) (string, error))
 		fmt.Fprintln(w, "input cannot be empty")
 	}
 }
+
+func (*CLI) ConfirmationCode(email string) (code int, err error) {
+	fmt.Printf("Enter confirmation code sent to %s: ", email)
+	_, err = fmt.Fscanf(os.Stdin, "%d", &code)
+	return
+}
diff --git a/auth/auth_ui/huh.go b/auth/auth_ui/huh.go
index cef4c9b5..f286ead4 100644
--- a/auth/auth_ui/huh.go
+++ b/auth/auth_ui/huh.go
@@ -4,6 +4,8 @@ import (
 	"errors"
 	"fmt"
 	"io"
+	"regexp"
+	"strconv"
 
 	"github.com/charmbracelet/huh"
 )
@@ -102,3 +104,30 @@ func valSepEaster() func(v int) error {
 		return nil
 	}
 }
+
+func (*Huh) ConfirmationCode(email string) (int, error) {
+	var strCode string
+	q := huh.NewInput().
+		CharLimit(6).
+		Title(fmt.Sprintf("Enter confirmation code sent to %s", email)).
+		Description("Slack did not recognise the browser, and sent a confirmation code.  Please enter the confirmation code below.").
+		Value(&strCode).
+		Validate(valSixDigits)
+	if err := q.Run(); err != nil {
+		return 0, err
+	}
+	code, err := strconv.Atoi(strCode)
+	if err != nil {
+		return 0, err
+	}
+	return code, nil
+}
+
+var numChlgRE = regexp.MustCompile(`^\d{6}$`)
+
+func valSixDigits(s string) error {
+	if numChlgRE.MatchString(s) {
+		return nil
+	}
+	return errors.New("confirmation code must be a sequence of six digits")
+}
diff --git a/auth/auth_ui/huh_test.go b/auth/auth_ui/huh_test.go
new file mode 100644
index 00000000..4e802a93
--- /dev/null
+++ b/auth/auth_ui/huh_test.go
@@ -0,0 +1,47 @@
+package auth_ui
+
+import "testing"
+
+func Test_valSixDigits(t *testing.T) {
+	type args struct {
+		s string
+	}
+	tests := []struct {
+		name    string
+		args    args
+		wantErr bool
+	}{
+		{
+			"empty",
+			args{""},
+			true,
+		},
+		{
+			"too short",
+			args{"12345"},
+			true,
+		},
+		{
+			"too long",
+			args{"1234567"},
+			true,
+		},
+		{
+			"not a number",
+			args{"123456a"},
+			true,
+		},
+		{
+			"valid",
+			args{"123456"},
+			false,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if err := valSixDigits(tt.args.s); (err != nil) != tt.wantErr {
+				t.Errorf("valSixDigits() error = %v, wantErr %v", err, tt.wantErr)
+			}
+		})
+	}
+}
diff --git a/auth/rod.go b/auth/rod.go
index f313f200..31e7c255 100644
--- a/auth/rod.go
+++ b/auth/rod.go
@@ -5,9 +5,7 @@ import (
 	"fmt"
 	"io"
 	"os"
-	"time"
 
-	"github.com/charmbracelet/huh/spinner"
 	"github.com/rusq/slackauth"
 	"github.com/rusq/slackdump/v2/auth/auth_ui"
 )
@@ -29,10 +27,9 @@ type browserAuthUIExt interface {
 	BrowserAuthUI
 	RequestLoginType(w io.Writer) (int, error)
 	RequestCreds(w io.Writer, workspace string) (email string, passwd string, err error)
+	ConfirmationCode(email string) (code int, err error)
 }
 
-const expectedLoginDuration = 16 * time.Second
-
 func NewRODAuth(ctx context.Context, opts ...Option) (RodAuth, error) {
 	r := RodAuth{
 		opts: options{
@@ -74,26 +71,10 @@ func NewRODAuth(ctx context.Context, opts ...Option) (RodAuth, error) {
 			return r, err
 		}
 	case auth_ui.LoginEmail:
-		username, password, err := r.opts.ui.RequestCreds(os.Stdout, r.opts.workspace)
+		sp, err = headlessFlow(ctx, r.opts.workspace, r.opts.ui)
 		if err != nil {
 			return r, err
 		}
-		if username == "" {
-			return r, fmt.Errorf("email cannot be empty")
-		}
-		if password == "" {
-			return r, fmt.Errorf("password cannot be empty")
-		}
-		var loginErr error
-		spin := spinner.New().Title("Logging in...").Action(func() {
-			sp.Token, sp.Cookie, loginErr = slackauth.Headless(ctx, r.opts.workspace, username, password)
-		})
-		if err := spin.Run(); err != nil {
-			return r, err
-		}
-		if loginErr != nil {
-			return r, loginErr
-		}
 		fmt.Fprintln(os.Stderr, "authenticated.")
 	case auth_ui.LoginCancel:
 		return r, ErrCancelled
@@ -103,3 +84,32 @@ func NewRODAuth(ctx context.Context, opts ...Option) (RodAuth, error) {
 		simpleProvider: sp,
 	}, nil
 }
+
+func headlessFlow(ctx context.Context, workspace string, ui browserAuthUIExt) (sp simpleProvider, err error) {
+	username, password, err := ui.RequestCreds(os.Stdout, workspace)
+	if err != nil {
+		return sp, err
+	}
+	if username == "" {
+		return sp, fmt.Errorf("email cannot be empty")
+	}
+	if password == "" {
+		return sp, fmt.Errorf("password cannot be empty")
+	}
+	fmt.Println("Logging in to Slack, depending on your connection speed, it will take 15-30 seconds...")
+
+	var loginErr error
+	sp.Token, sp.Cookie, loginErr = slackauth.Headless(
+		ctx,
+		workspace,
+		username,
+		password,
+		slackauth.WithChallengeFunc(ui.ConfirmationCode),
+	)
+	if loginErr != nil {
+		return sp, loginErr
+	}
+
+	fmt.Fprintln(os.Stderr, "authenticated.")
+	return
+}
diff --git a/go.mod b/go.mod
index f680503a..bfee6bdd 100644
--- a/go.mod
+++ b/go.mod
@@ -14,7 +14,7 @@ require (
 	github.com/rusq/dlog v1.4.0
 	github.com/rusq/osenv/v2 v2.0.1
 	github.com/rusq/secure v0.0.4
-	github.com/rusq/slackauth v0.0.5
+	github.com/rusq/slackauth v0.0.6
 	github.com/rusq/tracer v1.0.1
 	github.com/schollz/progressbar/v3 v3.13.0
 	github.com/slack-go/slack v0.12.1
diff --git a/go.sum b/go.sum
index 01768987..5adf8713 100644
--- a/go.sum
+++ b/go.sum
@@ -117,6 +117,8 @@ github.com/rusq/slackauth v0.0.4 h1:AMR0bRTHM7Kg2N14bPWm8bG+J5hXOoLrgiGUmFaBsMU=
 github.com/rusq/slackauth v0.0.4/go.mod h1:zb1PJY2+8uEqn0RiWuRjnd+ZFwwfnvA5xrGoooVUgNY=
 github.com/rusq/slackauth v0.0.5 h1:qhRkhLa+tS60OGPhzlO/mXbQiWxnzPkoVixqy18n7eI=
 github.com/rusq/slackauth v0.0.5/go.mod h1:zb1PJY2+8uEqn0RiWuRjnd+ZFwwfnvA5xrGoooVUgNY=
+github.com/rusq/slackauth v0.0.6 h1:vV4kg3lRKV+oiHVAWxyKXa9aoRU4XwT5pSQ0mlo9OSM=
+github.com/rusq/slackauth v0.0.6/go.mod h1:zb1PJY2+8uEqn0RiWuRjnd+ZFwwfnvA5xrGoooVUgNY=
 github.com/rusq/tracer v1.0.1 h1:5u4PCV8NGO97VuAINQA4gOVRkPoqHimLE2jpezRVNMU=
 github.com/rusq/tracer v1.0.1/go.mod h1:Rqu48C3/K8bA5NPmF20Hft73v431MQIdM+Co+113pME=
 github.com/schollz/progressbar/v3 v3.13.0 h1:9TeeWRcjW2qd05I8Kf9knPkW4vLM/hYoa6z9ABvxje8=