| diff --git a/lib/quicly.c b/lib/quicly.c | |
| index 95d5f13..3f4fd18 100644 | |
| --- a/lib/quicly.c | |
| +++ b/lib/quicly.c | |
| @@ -351,7 +351,10 @@ static __thread int64_t now; | |
| static void update_now(quicly_context_t *ctx) | |
| { | |
| - now = ctx->now->cb(ctx->now); | |
| + int64_t newval = ctx->now->cb(ctx->now); | |
| + | |
| + if (now < newval) | |
| + now = newval; | |
| } | |
| /** |