diff --git a/setup.cfg b/setup.cfg
index ed1b368..16bda35 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -83,7 +83,7 @@ build =
     build >= 0.7
 test =
     pytest >= 8.0
-    pytest-asyncio >= 0.23
+    pytest-asyncio == 0.21.1
     pytest-html >= 3.2.0
     coverage >= 6.4
 development =