diff --git a/requirements.txt b/requirements.txt
index efba460..d6cfc62 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -26,7 +26,7 @@ pytz==2019.1
 requests==2.22.0
 six==1.12.0
 snowballstemmer==1.9.0
-Sphinx==2.1.2
+Sphinx==3.0.4
 sphinx-rtd-theme==0.4.3
 sphinxcontrib-applehelp==1.0.1
 sphinxcontrib-devhelp==1.0.1