diff --git a/test/unit_tests/conftest.py b/test/unit_tests/conftest.py
index af380d4..d9a702c 100644
--- a/test/unit_tests/conftest.py
+++ b/test/unit_tests/conftest.py
@@ -1,4 +1,3 @@
-import io
 import random
 import tempfile
 from operator import itemgetter