diff --git a/pyproject.toml b/pyproject.toml
index 2571f3c..d7f54ab 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -67,7 +67,7 @@ dev-mkdocs = [
 dev-mypy = [
   "mypy == 1.19.1",
   "types-Markdown == 3.10.0.20251106",
-  "types-protobuf == 6.32.1.20251105",
+  "types-protobuf == 6.32.1.20251210",
   # 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