diff --git a/setup.py b/setup.py
index c2cfe3ea..3b78f69c 100644
--- a/setup.py
+++ b/setup.py
@@ -22,7 +22,7 @@
 description = "SQLAlchemy dialect integrated into Cloud Spanner database"
 dependencies = [
     "sqlalchemy>=1.1.13, <=1.3.23",
-    "google-cloud-spanner>=3.3.0",
+    "google-cloud-spanner>=3.12.0",
     "alembic",
 ]
 extras = {