diff --git a/dev_requirements.txt b/dev_requirements.txt
index 40a74f81..1cb36784 100644
--- a/dev_requirements.txt
+++ b/dev_requirements.txt
@@ -4,7 +4,7 @@ ujson>=1.35
 python-rapidjson>=0.7.0
 emoji>=0.5.2
 pytest>=4.4.1,<4.6
-pytest-asyncio>=0.10.0
+pytest-asyncio==0.10.0
 tox>=3.9.0
 aresponses>=1.1.1
 uvloop>=0.12.2