diff --git a/Doc/docs-requirements.txt b/Doc/docs-requirements.txt
index bf77512f8..c62c8d1e0 100644
--- a/Doc/docs-requirements.txt
+++ b/Doc/docs-requirements.txt
@@ -1,3 +1,3 @@
-sphinx==3.3.0
+sphinx==3.3.1
 sphinx_rtd_theme==0.5.0
 reportlab==3.5.55