diff --git a/pyproject.toml b/pyproject.toml
index 09d6f6ea..a5c24869 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -75,7 +75,7 @@ dev-mypy = [
   "mypy == 1.15.0",
   "grpc-stubs == 1.53.0.5",
   "types-Markdown == 3.7.0.20250322",
-  "types-protobuf == 5.29.1.20250315",
+  "types-protobuf == 5.29.1.20250403",
   # For checking the noxfile, docs/ script, and tests
   "frequenz-client-microgrid[dev-mkdocs,dev-noxfile,dev-pytest]",
 ]