diff --git a/ptuning/train_chat.sh b/ptuning/train_chat.sh
index b0f5cdc..2309f5a 100644
--- a/ptuning/train_chat.sh
+++ b/ptuning/train_chat.sh
@@ -1,4 +1,4 @@
-PRE_SEQ_LEN=8
+PRE_SEQ_LEN=128
 LR=1e-2
 
 CUDA_VISIBLE_DEVICES=0 python3 main.py \