diff --git a/pyproject.toml b/pyproject.toml
index bce94ed..f804ad1 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -67,7 +67,7 @@ dev-mkdocs = [
 dev-mypy = [
   "mypy == 1.15.0",
   "types-Markdown == 3.8.0.20250415",
-  "types-protobuf == 5.29.1.20250403",
+  "types-protobuf == 6.30.2.20250516",
   # For checking the noxfile, docs/ script, and tests
   "frequenz-client-reporting[dev-mkdocs,dev-noxfile,dev-pytest]",
   "pandas-stubs >= 2, < 3",  # Only required for example