diff --git a/configs/nat_base.json b/configs/nat_base.json
index ab9d59e..271a880 100644
--- a/configs/nat_base.json
+++ b/configs/nat_base.json
@@ -7,7 +7,7 @@
     "learning_rate": 2e-4,
     "betas": [0.8, 0.99],
     "eps": 1e-9,
-    "batch_size": 28,
+    "batch_size": 32,
     "fp16_run": true,
     "lr_decay": 0.999875,
     "segment_size": 8192,