diff --git a/tests/models/test_thermal_model.py b/tests/models/test_thermal_model.py
index 469b0a0..3a6c128 100644
--- a/tests/models/test_thermal_model.py
+++ b/tests/models/test_thermal_model.py
@@ -1,5 +1,5 @@
 """Test cases from Annex E of CIGRE TB 601."""
-import pytest
+
 
 def test_compute_conductor_temperature(example_model_1_conductors, example_model_2_conductors):
     # Check that the ampacity of a span with two conductors is divided