diff --git a/pyproject.toml b/pyproject.toml
index f0b6d89..8662e39 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -110,7 +110,7 @@ release = [
 test = [
   "dask",
   "pandas<2.2",
-  "pytest<8",
+  "pytest<9",
   "pytest-cov<5",
   "pytest-mock<4",
 ]