diff --git a/pyproject.toml b/pyproject.toml
index 2e8e650..322fb2c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -63,6 +63,7 @@ dev = [
     "mypy == 1.11.2",
 
     "pytest == 8.3.3",
+    "pytest-cov>=6.0.0",
 ]
 chdb = [
     "chdb>=2.0.1",