diff --git a/pyproject.toml b/pyproject.toml
index 70f51e2..afc7a1b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -72,7 +72,7 @@ dev-mkdocs = [
 dev-mypy = [
   "mypy == 1.15.0",
   # This dependency introduces breaking changes in patch releases
-  "grpc-stubs == 1.53.0.5",
+  "grpc-stubs == 1.53.0.6",
   "types-Markdown == 3.8.0.20250415",
   # For checking the noxfile, docs/ script, and tests
   "frequenz-dispatch[dev-mkdocs,dev-noxfile,dev-pytest]",