diff --git a/backend/pyproject.toml b/backend/pyproject.toml
index 183b90e..3d23b0b 100644
--- a/backend/pyproject.toml
+++ b/backend/pyproject.toml
@@ -21,7 +21,7 @@ dependencies = [
 
 [project.optional-dependencies]
 dev = [
-    "pytest==8.4.1",
+    "pytest==9.0.3",
     "pytest-asyncio==1.0.0",
     "pytest-cov==6.2.1",
     "ruff==0.12.0",