diff --git a/requirements/dev.txt b/requirements/dev.txt
index 182a70a..fd74d39 100644
--- a/requirements/dev.txt
+++ b/requirements/dev.txt
@@ -7,6 +7,6 @@ watchdog==0.8.3
 flake8==3.5.0
 tox==2.9.1
 coverage==4.5.1
-Sphinx==1.7.0
+Sphinx==8.1.2
 cryptography==2.1.4
 PyYAML==3.12