diff --git a/requirements-dev.txt b/requirements-dev.txt
index 5b970c44..76cd329e 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -8,7 +8,7 @@ transifex-client==0.14.2
 selenium==3.141.0
 twine==3.4.1
 Pallets-Sphinx-Themes==1.2.3
-Sphinx==3.5.2
+Sphinx==3.5.3
 sphinx-issues==1.2.0
 sphinx-jinja==1.1.1
 sphinx-tabs==2.1.0