diff --git a/tests/integration/test_postgresql_replica_database_engine_2/test.py b/tests/integration/test_postgresql_replica_database_engine_2/test.py
index 3f2ec74180b..1d84ce0e3e9 100644
--- a/tests/integration/test_postgresql_replica_database_engine_2/test.py
+++ b/tests/integration/test_postgresql_replica_database_engine_2/test.py
@@ -719,6 +719,36 @@ def test_too_many_parts(started_cluster):
     pg_manager2.drop_materialized_db()
 
 
+def test_toast(started_cluster):
+    table = "test_toast"
+    pg_manager.execute(
+        f"CREATE TABLE {table} (id integer PRIMARY KEY, txt text, other text)"
+    )
+    pg_manager.create_materialized_db(
+        ip=started_cluster.postgres_ip,
+        port=started_cluster.postgres_port,
+        settings=[
+            f"materialized_postgresql_tables_list = '{table}'",
+            "materialized_postgresql_backoff_min_ms = 100",
+            "materialized_postgresql_backoff_max_ms = 100",
+        ],
+    )
+
+    pg_manager.execute(
+        f"""\
+INSERT INTO {table} (id, txt)\
+VALUES (1, (SELECT array_to_string(ARRAY(SELECT chr((100 + round(random() * 25)) :: integer) FROM generate_series(1,30000) as t(i)), '')))
+    """
+    )
+
+    check_tables_are_synchronized(
+        instance,
+        table,
+        postgres_database=pg_manager.get_default_database(),
+        order_by="id",
+    )
+
+
 if __name__ == "__main__":
     cluster.start()
     input("Cluster created, press any key to destroy...")