diff --git a/pyproject.toml b/pyproject.toml
index 82ab803..a074a5a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -72,7 +72,7 @@ dev-mkdocs = [
   "frequenz-repo-config[lib] == 0.17.0",
 ]
 dev-mypy = [
-  "mypy == 1.19.1",
+  "mypy == 1.20.0",
   # This dependency introduces breaking changes in patch releases
   "grpc-stubs == 1.53.0.6",
   "types-Markdown == 3.10.2.20260211",