diff --git a/pkg/tui/dialog/session_browser.go b/pkg/tui/dialog/session_browser.go
index 29cf95e27..eecd0d0f4 100644
--- a/pkg/tui/dialog/session_browser.go
+++ b/pkg/tui/dialog/session_browser.go
@@ -76,7 +76,7 @@ func NewSessionBrowserDialog(sessions []session.Summary) Dialog {
 			Escape:     key.NewBinding(key.WithKeys("esc")),
 			Star:       key.NewBinding(key.WithKeys("ctrl+s")),
 			FilterStar: key.NewBinding(key.WithKeys("ctrl+f")),
-			CopyID:     key.NewBinding(key.WithKeys("ctrl+k")),
+			CopyID:     key.NewBinding(key.WithKeys("ctrl+y")),
 		},
 		openedAt: time.Now(),
 	}
@@ -290,7 +290,7 @@ func (d *sessionBrowserDialog) View() string {
 		AddSeparator().
 		AddContent(idFooter).
 		AddSpace().
-		AddHelpKeys("↑/↓", "navigate", "ctrl+s", "star", "ctrl+f", filterDesc, "ctrl+k", "copy id", "enter", "load", "esc", "close").
+		AddHelpKeys("↑/↓", "navigate", "ctrl+s", "star", "ctrl+f", filterDesc, "ctrl+y", "copy id", "enter", "load", "esc", "close").
 		Build()
 
 	return styles.DialogStyle.Width(dialogWidth).Render(content)
diff --git a/pkg/tui/dialog/session_browser_test.go b/pkg/tui/dialog/session_browser_test.go
index fd82a720c..b2fdaed24 100644
--- a/pkg/tui/dialog/session_browser_test.go
+++ b/pkg/tui/dialog/session_browser_test.go
@@ -87,6 +87,12 @@ func TestSessionBrowserNavigationWithCtrl(t *testing.T) {
 	updated, _ = d.Update(ctrlK)
 	d = updated.(*sessionBrowserDialog)
 	require.Equal(t, 0, d.selected, "selection should be 0 after ctrl+k")
+
+	// Verify ctrl+y is bound to CopyID and doesn't collide with Up.
+	// We only assert key matching here to avoid clipboard side-effects in tests.
+	ctrlY := tea.KeyPressMsg{Code: 'y', Mod: tea.ModCtrl}
+	require.True(t, key.Matches(ctrlY, d.keyMap.CopyID), "ctrl+y should match keyMap.CopyID")
+	require.False(t, key.Matches(ctrlY, d.keyMap.Up), "ctrl+y should not match keyMap.Up")
 }
 
 func TestSessionBrowserViewShowsSelection(t *testing.T) {