diff --git a/pyproject.toml b/pyproject.toml
index 03d8d502..5a7defba 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -57,7 +57,7 @@ optional-dependencies.dev = [
     "pyrefly==1.0.0",
     "pyright==1.1.409",
     "pyroma==5.0.1",
-    "pytest==9.0.3",
+    "pytest==9.1.0",
     "pytest-beartype-tests==2026.4.26",
     "pytest-cov==7.1.0",
     "pytest-regressions==2.10.0",