diff --git a/pyproject.toml b/pyproject.toml
index 4608a34..090a2ba 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -20,7 +20,7 @@ dev = [
     "pytest-instafail==0.5.*",
     "pytest-mock==3.*",
     "pytest-watch==4.*",
-    "pytest==8.*",
+    "pytest==9.*",
     "ruff==0.*",
 ]
 [project.scripts]