diff --git a/pyproject.toml b/pyproject.toml
index ccafb14e5..192b987ff 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -20,7 +20,7 @@ googleapis-common-protos-stubs = ">=2.0.0"
 google-ads = ">=22.1.0"
 grpc-stubs = ">=1.24.7"
 types-protobuf = ">=3.18.0"
-proto-plus-stubs = ">=0.3.0"
+proto-plus-stubs = "^0.3.1"
 google-auth-stubs = ">=0.1.0"
 
 [tool.poetry.group.dev.dependencies]