diff --git a/requirements.in b/requirements.in
index e3b8844..f750958 100644
--- a/requirements.in
+++ b/requirements.in
@@ -33,5 +33,5 @@ pip-tools==7.4.1
 # Docs
 antsibull-docs==2.15.0
 ansible-pygments==0.1.1
-sphinx==7.4.7
+sphinx==8.1.3
 sphinx-ansible-theme==0.10.3
diff --git a/requirements.txt b/requirements.txt
index bd6e5ae..876b4c8 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -284,7 +284,7 @@ six==1.16.0
     # via twiggy
 snowballstemmer==2.2.0
     # via sphinx
-sphinx==7.4.7
+sphinx==8.1.3
     # via
     #   -r requirements.in
     #   antsibull-docs