diff --git a/pyproject.toml b/pyproject.toml
index 83144cc..2d5c3f8 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -78,7 +78,7 @@ dev-mypy = [
   "mypy == 1.20.2",
   "grpc-stubs == 1.53.0.6",
   "types-Markdown == 3.10.2.20260211",
-  "types-protobuf == 6.32.1.20260221",
+  "types-protobuf == 7.34.1.20260503",
   # For checking the noxfile, docs/ script, and tests
   "frequenz-client-microgrid[dev-mkdocs,dev-noxfile,dev-pytest]",
 ]