diff --git a/requirements_dev.txt b/requirements_dev.txt
index 273f59b..4f53042 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -6,4 +6,4 @@ flake8==3.8.4
 coverage==5.3
 cryptography==3.4.6
 Sphinx==3.3.1
-sphinx-rtd-theme==0.5.0
+sphinx-rtd-theme==1.1.0