diff --git a/pyproject.toml b/pyproject.toml
index 6cb2137..f2016ad 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -74,7 +74,7 @@ dev-mypy = [
   "mypy == 1.17.1",
   # This dependency introduces breaking changes in patch releases
   "grpc-stubs == 1.53.0.6",
-  "types-Markdown == 3.8.0.20250708",
+  "types-Markdown == 3.8.0.20250809",
   # For checking the noxfile, docs/ script, and tests
   "frequenz-dispatch[dev-mkdocs,dev-noxfile,dev-pytest]",
 ]