diff --git a/pyproject.toml b/pyproject.toml
index f8a0e82a..ec02e627 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -83,7 +83,7 @@ dev-mkdocs = [
 ]
 dev-mypy = [
   "mypy == 1.17.1",
-  "types-Markdown == 3.8.0.20250708",
+  "types-Markdown == 3.8.0.20250809",
   # For checking the noxfile, docs/ script, and tests
   "frequenz-client-dispatch[cli,dev-mkdocs,dev-noxfile,dev-pytest]",
   "grpc-stubs == 1.53.0.6",