diff --git a/src/AdoNet/Orleans.Clustering.AdoNet/PostgreSQL-Clustering.sql b/src/AdoNet/Orleans.Clustering.AdoNet/PostgreSQL-Clustering.sql
index 2d2c0a20a2..459e76b579 100644
--- a/src/AdoNet/Orleans.Clustering.AdoNet/PostgreSQL-Clustering.sql
+++ b/src/AdoNet/Orleans.Clustering.AdoNet/PostgreSQL-Clustering.sql
@@ -344,3 +344,14 @@ VALUES
         AND Status = @Status AND @Status IS NOT NULL
         AND ProxyPort > 0;
 ');
+
+INSERT INTO OrleansQuery(QueryKey, QueryText)
+VALUES
+(
+    'CleanupDefunctSiloEntriesKey',
+    'DELETE FROM OrleansMembershipTable
+    WHERE DeploymentId = @DeploymentId
+        AND @DeploymentId IS NOT NULL
+        AND IAmAliveTime < @IAmAliveTime
+        AND Status != 3;
+');