diff --git a/pyproject.toml b/pyproject.toml
index 003ca6862..4dd3005d0 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -38,7 +38,7 @@ dependencies = [
 [project.optional-dependencies]
 docs = [
     "sphinx==6.1.3",
-    "sphinx_rtd_theme==1.2.0",
+    "sphinx_rtd_theme==1.2.1",
 ]
 test = [
     "black==23.3.0",