diff --git a/pyproject.toml b/pyproject.toml
index 90cc1e96..ffbce20f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -37,3 +37,4 @@ pdoc3 = "0.10.0"
 [tool.poetry.group.test.dependencies]
 pytest = "7.4.0"
 coverage = "7.2.7"
+pytest-mock = "3.11.1"