diff --git a/backend/pyproject.toml b/backend/pyproject.toml
index af548d7..8d649ed 100644
--- a/backend/pyproject.toml
+++ b/backend/pyproject.toml
@@ -16,7 +16,7 @@ dependencies = [
 dev = [
     "httpx>=0.28,<1.0",
     "pytest>=8.3,<9.0",
-    "pytest-asyncio>=0.26,<1.0",
+    "pytest-asyncio>=0.26,<2.0",
     "ruff>=0.11,<1.0",
 ]