diff --git a/internal/tui/datetime.go b/internal/tui/datetime.go
index 6cad72ee..ea119e7d 100644
--- a/internal/tui/datetime.go
+++ b/internal/tui/datetime.go
@@ -237,6 +237,11 @@ func (p *dateTimePicker) handleKey(msg tea.KeyPressMsg) tea.Cmd {
 			p.shiftDate(days)
 			return nil
 		}
+		// "-" cannot appear in a YYYY-MM-DD date, so swallow it here
+		// instead of letting it through to the text input (hey-cli#368)
+		if msg.String() == "-" {
+			return nil
+		}
 		var cmd tea.Cmd
 		p.dateInput, cmd = p.dateInput.Update(msg)
 		return cmd
@@ -263,13 +268,10 @@ func dateStep(msg tea.KeyPressMsg) (days int, stepped bool) {
 	case tea.KeyUp:
 		return 1, true
 	case tea.KeyDown:
-		return -1, true
 	}
 	switch msg.String() {
 	case "+", "=":
 		return 1, true
-	case "-":
-		return -1, true
 	}
 	return 0, false
 }
diff --git a/internal/tui/datetime_test.go b/internal/tui/datetime_test.go
index 8951cb7f..073077de 100644
--- a/internal/tui/datetime_test.go
+++ b/internal/tui/datetime_test.go
@@ -68,15 +68,15 @@ func TestDateTimePickerStepsTheDateByADay(t *testing.T) {
 		t.Errorf("after up, date() = %q, want 2026-08-23", got)
 	}
 
-	picker.handleKey(tea.KeyPressMsg{Code: tea.KeyDown})
-	picker.handleKey(tea.KeyPressMsg{Code: tea.KeyDown})
-	if got := picker.date(); got != "2026-08-21" {
-		t.Errorf("after two downs, date() = %q, want 2026-08-21", got)
+	// "-" no longer steps date (hey-cli#368)
+	typeInto(t, picker, "-")
+	if got := picker.date(); got != "2026-08-23" {
+		t.Errorf("after -, date() = %q, want unchanged", got)
 	}
 
 	typeInto(t, picker, "+")
-	if got := picker.date(); got != "2026-08-22" {
-		t.Errorf("after +, date() = %q, want 2026-08-22", got)
+	if got := picker.date(); got != "2026-08-24" {
+		t.Errorf("after +, date() = %q, want 2026-08-24", got)
 	}
 
 	picker.dateInput.SetValue("next tuesday")