diff --git a/requirements-ci.txt b/requirements-ci.txt
index 3e507d35..9ba41cbe 100644
--- a/requirements-ci.txt
+++ b/requirements-ci.txt
@@ -6,6 +6,6 @@ pytest-asyncio==0.5.0
 pytest-cov==2.4.0
 pytest-mock==1.5.0
 codecov==2.0.5
-sphinx==1.5
+sphinx==1.5.1
 marshmallow==2.10.4
 asynctest==0.9.0