diff --git a/pyproject.toml b/pyproject.toml
index 485855c..76e4bde 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -18,7 +18,7 @@ revoice = "revoice.cli:main"
 [project.optional-dependencies]
 torch = ["torch>=1.13"]
 dev = [
-    "pytest>=7.0",
+    "pytest>=9.1.1",
     "pytest-cov>=4.0",
     "ruff>=0.4",
     "mypy>=1.6",