diff --git a/changes/2031.misc.rst b/changes/2031.misc.rst
new file mode 100644
index 000000000..cbd28d906
--- /dev/null
+++ b/changes/2031.misc.rst
@@ -0,0 +1 @@
+Updated sphinx from 8.0.2 to 8.1.3.
diff --git a/pyproject.toml b/pyproject.toml
index 827b755f0..802f3d2d2 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -108,7 +108,7 @@ dev = [
 docs = [
     "furo == 2024.8.6",
     "pyenchant == 3.2.2",
-    "sphinx == 8.0.2",
+    "sphinx == 8.1.3",
     "sphinx_tabs == 3.4.5",
     "sphinx-autobuild == 2024.10.3",
     "sphinx-copybutton == 0.5.2",