diff --git a/pyproject.toml b/pyproject.toml
index b120afbdb..260186e2c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -75,7 +75,7 @@ optional-dependencies.dev = [
     "pyrefly==1.0.0",
     "pyright==1.1.410",
     "pyroma==5.0.1",
-    "pytest==9.0.3",
+    "pytest==9.1.0",
     "pytest-beartype-tests==2026.4.26",
     "pytest-retry==1.7.0",
     "pytest-xdist==3.8.0",