diff --git a/pyproject.toml b/pyproject.toml
index 4cbcf77ce2..bb00c2a2b8 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -90,7 +90,7 @@ testing = [
 documentation = [
     "numpydoc==1.10.0",
     "sphinx>=5.1.1",
-    "sphinx-rtd-theme==3.0.2",
+    "sphinx-rtd-theme==3.1.0",
     "sphinx-gallery==0.20.0",
     "sphinx_design==0.6.1",
     "pydata-sphinx-theme==0.16.1"