diff --git a/scalardb-analytics-sample/docker/Dockerfile.spark b/scalardb-analytics-sample/docker/Dockerfile.spark
index e4006f3..996c110 100644
--- a/scalardb-analytics-sample/docker/Dockerfile.spark
+++ b/scalardb-analytics-sample/docker/Dockerfile.spark
@@ -1,6 +1,6 @@
 FROM eclipse-temurin:17-jre-jammy
 
-ENV SPARK_VERSION=3.5.6 \
+ENV SPARK_VERSION=3.5.7 \
     HADOOP_VERSION=3 \
     SPARK_HOME=/opt/spark \
     PATH="/opt/spark/bin:/opt/spark/sbin:${PATH}" \
diff --git a/scalardb-analytics-sample/sql/postgres_copy.sql b/scalardb-analytics-sample/sql/postgres_copy.sql
index 22b2224..1b248cf 100644
--- a/scalardb-analytics-sample/sql/postgres_copy.sql
+++ b/scalardb-analytics-sample/sql/postgres_copy.sql
@@ -1,4 +1,5 @@
-create table customer (
+create schema if not exists sample_ns;
+create table sample_ns.customer (
     c_custkey int,
     c_name text,
     c_address text,
@@ -9,4 +10,4 @@ create table customer (
     c_comment text,
     PRIMARY KEY (c_custkey)
 );
-\copy customer from '/opt/customer.csv' delimiter ',' csv;
+\copy sample_ns.customer from '/opt/customer.csv' delimiter ',' csv;