diff --git a/src/index.ts b/src/index.ts
index d49b709..4ddd18b 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -40,6 +40,9 @@ function toTimestamp(n: number): string {
 		result.push(n % 60);
 		n = Math.floor(n / 60);
 	}
+	if (result.length == 1) {
+		result.push(0); // to get timestamps like "00:03"
+	}
 	return result
 		.map((n, i) => (i >= 2 ? n.toString() : n.toString().padStart(2, "0")))
 		.reverse()