diff --git a/setup.py b/setup.py
index 72fa5653..7109e395 100644
--- a/setup.py
+++ b/setup.py
@@ -23,7 +23,7 @@
 description = "SQLAlchemy dialect integrated into Cloud Spanner database"
 dependencies = [
     "sqlalchemy>=1.1.13",
-    "google-cloud-spanner>=3.12.0",
+    "google-cloud-spanner @ git+https://github.com/c2nes/python-spanner.git@dml-returning#egg=google-cloud-spanner",
     "alembic",
 ]
 extras = {