diff --git a/pyproject.toml b/pyproject.toml
index 4ec6919..79e50f9 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -64,7 +64,7 @@ dev-mkdocs = [
 ]
 dev-mypy = [
   "mypy == 1.19.1",
-  "types-Markdown == 3.10.2.20260211",
+  "types-Markdown == 3.10.2.20260518",
   # For checking the noxfile, docs/ script, and tests
   "frequenz-quantities[dev-mkdocs,dev-noxfile,dev-pytest,marshmallow]",
 ]