diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..0a1b85c
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+/csv/history.tsv
diff --git a/csv/history.tsv b/csv/history.tsv
deleted file mode 100644
index 414d607..0000000
--- a/csv/history.tsv
+++ /dev/null
@@ -1 +0,0 @@
-model_A	model_A_hash	model_B	model_B_hash	model_O	model_O_hash	base_alpha	weight_name	weight_values
\ No newline at end of file
diff --git a/scripts/merge_history.py b/scripts/merge_history.py
index e352057..1aa3d11 100644
--- a/scripts/merge_history.py
+++ b/scripts/merge_history.py
@@ -32,8 +32,8 @@ class MergeHistory():
 
         if not os.path.exists(self.filepath):
             with open(self.filepath, "w", newline="", encoding="utf-8") as f:
-                wr = writer(f, fieldnames=HEADERS, delimiter='\t')
-                wr.writerow(HEADERS)
+                wr = DictWriter(f, fieldnames=HEADERS, delimiter='\t')
+                wr.writeheader()
         # save to file
         with open(self.filepath, "a", newline="", encoding='utf-8') as f:
             dictwriter = DictWriter(f, fieldnames=HEADERS, delimiter='\t')