diff --git a/requirements/dev.txt b/requirements/dev.txt
index 221630b4..99f2383f 100644
--- a/requirements/dev.txt
+++ b/requirements/dev.txt
@@ -93,7 +93,7 @@ sphinx-issues==1.2.0
     # via -r requirements/docs.in
 sphinx-tabs==2.0.0
     # via -r requirements/docs.in
-sphinx==3.4.1
+sphinx==3.4.3
     # via
     #   -r requirements/docs.in
     #   pallets-sphinx-themes
diff --git a/requirements/docs.txt b/requirements/docs.txt
index 2bc1cba2..dd4db38e 100644
--- a/requirements/docs.txt
+++ b/requirements/docs.txt
@@ -45,7 +45,7 @@ sphinx-issues==1.2.0
     # via -r requirements/docs.in
 sphinx-tabs==2.0.0
     # via -r requirements/docs.in
-sphinx==3.4.1
+sphinx==3.4.3
     # via
     #   -r requirements/docs.in
     #   pallets-sphinx-themes