diff --git a/pyproject.toml b/pyproject.toml
index e88532f9..a11d9f5a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -64,7 +64,7 @@ test = [
     "faker ==37.1.0",
     "hypothesis >=6.21.0,<6.130.9",
     "pytest >=7.2.0,<9.0.0",
-    "pytest-cases ==3.8.6",
+    "pytest-cases ==3.9.1",
     "pytest-custom_exit_code ==0.3.0",
     "pytest-cov ==6.1.0",
     "pytest-doctestplus ==1.3.0",