diff --git a/pyproject.toml b/pyproject.toml
index 039419e..7293e1c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -49,5 +49,4 @@ include-package-data = true
 [dependency-groups]
 test = [
     "pytest",
-    "mock",
 ]
diff --git a/tests/test_decorator.py b/tests/test_decorator.py
index 0492b3c..ade7381 100644
--- a/tests/test_decorator.py
+++ b/tests/test_decorator.py
@@ -1,4 +1,4 @@
-import mock
+from unittest import mock
 import pytest
 import laboratory
 from laboratory import Experiment
diff --git a/tests/test_experiment.py b/tests/test_experiment.py
index 76a3817..5fb5a62 100644
--- a/tests/test_experiment.py
+++ b/tests/test_experiment.py
@@ -1,4 +1,4 @@
-import mock
+from unittest import mock
 import pytest
 
 import laboratory