diff --git a/pyproject.toml b/pyproject.toml
index f728736..18522da 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -25,6 +25,7 @@ dev = [
     "pytest-random-order",
     "ophyd_devices",
     "bec_server",
+    "pytest-cov",
 ]
 
 [project.entry-points."bec"]