diff --git a/pyproject.toml b/pyproject.toml
index bce1708f..3bfe1797 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -38,7 +38,7 @@ pytest = "4.1.1"
 pytest-asyncio = "0.10.0"
 pytest-cov = "2.6.1"
 pytest-mock = "1.10.0"
-sphinx = "1.8.3"
+sphinx = "2.2.0"
 sphinx-autobuild = "0.7.1"
 sphinx-rtd-theme = "0.4.2"
 sphinxcontrib-httpdomain = "1.6.1"