diff --git a/CHANGELOG b/CHANGELOG
index d1c5c44..ec96172 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,6 @@
+- Unreleased
+  - Fix a race introduced in 0.21.4 where a request sent right after a nested dispatch (e.g. `perform_microtask_checkpoint` or a nested `call` from an attached callback) could be dropped, deadlocking the context
+
 - 0.21.4 - 24-06-2026
   - Fix stale V8 termination state after interrupts/timeouts so contexts remain usable after cancelled evaluations
   - Let Ruby interrupts wake MiniRacer calls without immediately terminating V8, allowing signal traps and nested callbacks to unwind safely
diff --git a/ext/mini_racer_extension/mini_racer_extension.c b/ext/mini_racer_extension/mini_racer_extension.c
index afa6e9d..c13dbfe 100644
--- a/ext/mini_racer_extension/mini_racer_extension.c
+++ b/ext/mini_racer_extension/mini_racer_extension.c
@@ -893,7 +893,6 @@ void v8_roundtrip(Context *c, const uint8_t **p, size_t *n)
 {
     pthread_mutex_lock(&c->mtx);
     buf_reset(&c->v8_req);
-    buf_reset(&c->req);
     if (c->res.len)
         c->res_ready = 1;
     pthread_cond_signal(&c->cv);