diff --git a/finetune_dialogs_tool/main.py b/finetune_dialogs_tool/main.py
index 14a3c6b..692adac 100644
--- a/finetune_dialogs_tool/main.py
+++ b/finetune_dialogs_tool/main.py
@@ -232,7 +232,7 @@ for line in dialog:
 #    next_file = str(max([int(f[:-5]) for f in files]) + 1) + ".json"
 
 
-next_file = datetime.now().strftime("%d-%m-%Y_%H-%M-%S") + ".json"
+next_file = datetime.now().strftime("%Y-%m-%d_%H-%M-%S") + ".json"
 
 # save to output_dialogs/next_file
 with open(root + "/output_dialogs/" + next_file, "w", encoding="utf-8") as f: