diff --git a/demo/seqToseq/translation/train.conf b/demo/seqToseq/translation/train.conf
index 0718f00f68106c6a777445bebe486a1f589907dc..72b7ccdbb95dbda8f06674079db9a3257bb31622 100644
--- a/demo/seqToseq/translation/train.conf
+++ b/demo/seqToseq/translation/train.conf
@@ -28,6 +28,7 @@ train_conf = seq_to_seq_data(data_dir = data_dir,
 
 ### Algorithm Configuration
 settings(
+    learning_method = AdamOptimizer(),
     batch_size = 50,
     learning_rate = 5e-4)