diff --git a/requirements-docs.txt b/requirements-docs.txt
index 718a56f1..94e20ff7 100644
--- a/requirements-docs.txt
+++ b/requirements-docs.txt
@@ -479,7 +479,7 @@ soupsieve==2.0.1
     # via beautifulsoup4
 sphinx-rtd-theme==0.5.1
     # via -r requirements-docs.in
-sphinx==3.5.1
+sphinx==3.5.2
     # via
     #   -r requirements-docs.in
     #   sphinx-rtd-theme