diff --git a/time.zig b/time.zig
index 1e2b9902c2ed97e790e9bd475ce5c648dcf19143..6bb457ca89fd0960126b9a64f10a8ce14bcf6387 100644
--- a/time.zig
+++ b/time.zig
@@ -215,6 +215,7 @@ pub const DateTime = struct {
                 ',',
                 ' ',
                 ':',
+                '-',
                 => {
                     try writer.writeAll(&.{c});
                     s = i + 1;