diff --git a/pyproject.toml b/pyproject.toml
index 1d46bfc..7f4f3b5 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -82,7 +82,7 @@ dev-mkdocs = [
   "frequenz-repo-config[lib] == 0.13.8",
 ]
 dev-mypy = [
-  "mypy == 1.19.1",
+  "mypy == 1.20.0",
   "types-Markdown == 3.10.2.20260211",
   # For checking the noxfile, docs/ script, and tests
   "frequenz-client-dispatch[cli,dev-mkdocs,dev-noxfile,dev-pytest]",