Define asyncio_default_fixture_loop_scope

Change-Id: I89ce120c918aa3b3d28e6f32c3cc5833b474db23
diff --git a/CHANGELOG.md b/CHANGELOG.md
index add51c0..4475ef2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,6 @@
 # Version history
 
+- Fixed asyncio_default_fixture_loop_scope warning in tests
 - Fixed NULL warning in fetch functions
 
 ## 1.0.0
diff --git a/pyproject.toml b/pyproject.toml
index eff2365..388a54a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -42,3 +42,6 @@
 
 [tool.pdm]
 distribution = true
+[tool.pytest.ini_options]
+asyncio_mode = "auto"
+asyncio_default_fixture_loop_scope = "session"