diff --git a/pyproject.toml b/pyproject.toml
index b47b672..bbe1bc0 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -51,5 +51,6 @@ dev = [
     "trepan3k>=1.3.1",
 ]
 test = [
+    "pytest>=8.3.4",
     "scikit-learn>=1.3.2",
 ]