diff --git a/environment.dev.yml b/environment.dev.yml
index cebaa44..f0186fe 100644
--- a/environment.dev.yml
+++ b/environment.dev.yml
@@ -22,7 +22,7 @@ dependencies:
       - pytest-cov==2.6.0
       - pytest-timeout==1.3.2
       - pytest-mock==1.10.0
-      - pytest-asyncio==0.9.pytest-asyncio==0.9.00
+      - pytest-asyncio==0.10.0
       - Sphinx==1.8.1
       - coverage==4.5.1
       - coveralls==1.5.1