diff --git a/pyproject.toml b/pyproject.toml
index 451f42b..07b6d2c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -71,7 +71,7 @@ dev-mkdocs = [
 dev-mypy = [
   "mypy == 1.20.2",
   "types-networkx>=3.6.1.20251220",
-  "types-Markdown == 3.10.2.20260408",
+  "types-Markdown == 3.10.2.20260518",
   # For checking the noxfile, docs/ script, and tests
   "frequenz-gridpool[dev-mkdocs,dev-noxfile,dev-pytest]",
 ]