diff --git a/requirements-test.txt b/requirements-test.txt
index 584dbb57981fd9b8d16a7acc37299285f0ecfb25..00557c9c726b99cef00a9ed39e3f0359753fa925 100644
--- a/requirements-test.txt
+++ b/requirements-test.txt
@@ -1,2 +1,3 @@
 pytest
+pytest-mock
 swh.scheduler[testing]