diff --git a/pyproject.toml b/pyproject.toml
index 9bb215a..d70b268 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -48,7 +48,7 @@ dev-mkdocs = [
   "mkdocs-gen-files == 0.5.0",
   "mkdocs-literate-nav == 0.6.1",
   "mkdocs-material == 9.3.1",
-  "mkdocs-section-index == 0.3.6",
+  "mkdocs-section-index == 0.3.7",
   "mkdocstrings[python] == 0.23.0",
   "frequenz-repo-config[api] == 0.5.2",
 ]