diff --git a/python/dalex/dalex/model_explanations/_variable_importance/utils.py b/python/dalex/dalex/model_explanations/_variable_importance/utils.py
index 623fd093..2a147e28 100644
--- a/python/dalex/dalex/model_explanations/_variable_importance/utils.py
+++ b/python/dalex/dalex/model_explanations/_variable_importance/utils.py
@@ -1,4 +1,6 @@
+import inspect
 import multiprocessing as mp
+import warnings
 from numpy.random import SeedSequence, default_rng
 
 import numpy as np