diff --git a/pyproject.toml b/pyproject.toml
index 7a47c5f..427b891 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -67,7 +67,7 @@ dev-mkdocs = [
 ]
 dev-mypy = [
   "mypy == 1.20.2",
-  "types-Markdown == 3.10.2.20260408",
+  "types-Markdown == 3.10.2.20260518",
   "types-protobuf == 7.34.1.20260408",
   # For checking the noxfile, docs/ script, and tests
   "frequenz-client-reporting[dev-mkdocs,dev-noxfile,dev-pytest]",