diff --git a/tests/dev.requirements.txt b/tests/dev.requirements.txt
index d32ffcf..842e5a7 100644
--- a/tests/dev.requirements.txt
+++ b/tests/dev.requirements.txt
@@ -12,7 +12,9 @@ sqlalchemy_utils==0.36.8
 gino-starlette==0.1.1
 
 # Testing
-pytest
+openapi-spec-validator
+pytest; python_version != '3.9'
+pytest !=7.0.0; python_version == '3.9'
 pytest-virtualenv
 requests
 asynctest