diff --git a/tests/conftest.py b/tests/conftest.py
index c312d5a..1e3ff5a 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -1,6 +1,5 @@
 import pytest
 import tempfile
-import os
 from pathlib import Path
 
 
@@ -65,4 +64,4 @@ cmd cargo build --release
 - 1700000002
 cmd curl localhost:8080/api/health
     """.strip())
-    return history_file
\ No newline at end of file
+    return history_file