diff --git a/requirements/development.txt b/requirements/development.txt
index 06644f8..ccb7859 100644
--- a/requirements/development.txt
+++ b/requirements/development.txt
@@ -105,7 +105,7 @@ snowballstemmer==2.2.0
     # via sphinx
 soupsieve==2.3.2.post1
     # via beautifulsoup4
-sphinx==4.5.0
+sphinx==5.3.0
     # via
     #   -r requirements/documentation.in
     #   furo
diff --git a/requirements/documentation.txt b/requirements/documentation.txt
index 1eada0d..f55f469 100644
--- a/requirements/documentation.txt
+++ b/requirements/documentation.txt
@@ -52,7 +52,7 @@ snowballstemmer==2.2.0
     # via sphinx
 soupsieve==2.3.2.post1
     # via beautifulsoup4
-sphinx==4.5.0
+sphinx==5.3.0
     # via
     #   -r requirements/documentation.in
     #   furo