diff --git a/pyproject.toml b/pyproject.toml
index a98758614..50263b84f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -69,7 +69,7 @@ dev-mkdocs = [
 dev-mypy = [
   "mypy == 1.19.0",
   "types-Markdown == 3.10.0.20251106",
-  "types-protobuf == 6.32.1.20251105",
+  "types-protobuf == 6.32.1.20251210",
   "types-setuptools == 80.9.0.20250822",
   # For checking the noxfile, docs/ script, and tests
   "frequenz-sdk[dev-mkdocs,dev-noxfile,dev-pytest]",