diff --git a/rate/rate.go b/rate/rate.go
index ae93e24..85c18b5 100644
--- a/rate/rate.go
+++ b/rate/rate.go
@@ -281,6 +281,23 @@ func (lim *Limiter) SetLimitAt(now time.Time, newLimit Limit) {
 	lim.limit = newLimit
 }
 
+// SetBurst is shorthand for SetBurstAt(time.Now(), newBurst).
+func (lim *Limiter) SetBurst(newBurst int) {
+	lim.SetBurstAt(time.Now(), newBurst)
+}
+
+// SetBurstAt sets a new burst size for the limiter.
+func (lim *Limiter) SetBurstAt(now time.Time, newBurst int) {
+	lim.mu.Lock()
+	defer lim.mu.Unlock()
+
+	now, _, tokens := lim.advance(now)
+
+	lim.last = now
+	lim.tokens = tokens
+	lim.burst = newBurst
+}
+
 // reserveN is a helper method for AllowN, ReserveN, and WaitN.
 // maxFutureReserve specifies the maximum reservation wait duration allowed.
 // reserveN returns Reservation, not *Reservation, to avoid allocation in AllowN and WaitN.
diff --git a/rate/rate_test.go b/rate/rate_test.go
index ec8c66d..448300d 100644
--- a/rate/rate_test.go
+++ b/rate/rate_test.go
@@ -352,6 +352,15 @@ func TestReserveSetLimit(t *testing.T) {
 	runReserve(t, lim, request{t2, 1, t4, true}) // violates Limit and Burst
 }
 
+func TestReserveSetBurst(t *testing.T) {
+	lim := NewLimiter(5, 2)
+
+	runReserve(t, lim, request{t0, 2, t0, true})
+	runReserve(t, lim, request{t0, 2, t4, true})
+	lim.SetBurstAt(t3, 4)
+	runReserve(t, lim, request{t0, 4, t9, true}) // violates Limit and Burst
+}
+
 func TestReserveSetLimitCancel(t *testing.T) {
 	lim := NewLimiter(5, 2)