diff --git a/internal/consensus/reactor_test.go b/internal/consensus/reactor_test.go
index c0a6445aa..998cbb1b8 100644
--- a/internal/consensus/reactor_test.go
+++ b/internal/consensus/reactor_test.go
@@ -726,7 +726,7 @@ func TestReactorValidatorSetChanges(t *testing.T) {
 	)
 	t.Cleanup(cleanup)
 
-	rts := setup(ctx, t, nPeers, states, 100) // buffer must be large enough to not deadlock
+	rts := setup(ctx, t, nPeers, states, 1000) // buffer must be large enough to not deadlock
 
 	for _, reactor := range rts.reactors {
 		state := reactor.state.GetState()