diff --git a/pyproject.toml b/pyproject.toml
index 76cc522..519a07c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -64,7 +64,7 @@ dev-mypy = [
   "mypy == 1.15.0",
   "types-Markdown == 3.8.0.20250415",
   "types-protobuf == 5.29.1.20250403",
-  "grpc-stubs == 1.53.0.5", # This dependency introduces breaking changes in patch releases
+  "grpc-stubs == 1.53.0.6", # This dependency introduces breaking changes in patch releases
   # For checking the noxfile, docs/ script, and tests
   "frequenz-client-base[dev-mkdocs,dev-noxfile,dev-pytest]",
 ]