diff --git a/.github/workflows/build-test.yml b/.github/workflows/build-test.yml
index 92a7a8a54..40536225f 100644
--- a/.github/workflows/build-test.yml
+++ b/.github/workflows/build-test.yml
@@ -37,7 +37,7 @@ jobs:
         strategy:
             fail-fast: false
             matrix:
-                image: [ 'jdbc-centos6-default', 'jdbc-centos7-openjdk8', 'jdbc-centos7-openjdk11', 'jdbc-centos7-openjdk17' ]
+                image: [ 'jdbc-centos7-openjdk8', 'jdbc-centos7-openjdk11', 'jdbc-centos7-openjdk17' ]
                 cloud: [ 'AWS' ]
                 category: ['TestCategoryResultSet,TestCategoryOthers,TestCategoryLoader', 'TestCategoryConnection,TestCategoryStatement', 'TestCategoryArrow,TestCategoryCore', 'TestCategoryFips']
         steps:
@@ -57,7 +57,7 @@ jobs:
         strategy:
             fail-fast: false
             matrix:
-                image: [ 'jdbc-centos6-default' ]
+                image: [ 'jdbc-centos7-openjdk8' ]
                 cloud: [ 'AWS' ]
                 category: ['TestCategoryResultSet,TestCategoryOthers', 'TestCategoryConnection,TestCategoryStatement', 'TestCategoryCore,TestCategoryLoader']
                 is_old_driver: ['true']
diff --git a/ci/_init.sh b/ci/_init.sh
index d1e585b85..c91f03c31 100755
--- a/ci/_init.sh
+++ b/ci/_init.sh
@@ -20,7 +20,6 @@ export DRIVER_NAME=jdbc
 TEST_IMAGE_VERSION=1
 
 declare -A TEST_IMAGE_NAMES=(
-    [$DRIVER_NAME-centos6-default]=$DOCKER_REGISTRY_NAME/client-$DRIVER_NAME-centos6-default-test:$TEST_IMAGE_VERSION
     [$DRIVER_NAME-centos7-openjdk8]=$DOCKER_REGISTRY_NAME/client-$DRIVER_NAME-centos7-openjdk8-test:$TEST_IMAGE_VERSION
     [$DRIVER_NAME-centos7-openjdk11]=$DOCKER_REGISTRY_NAME/client-$DRIVER_NAME-centos7-openjdk11-test:$TEST_IMAGE_VERSION
     [$DRIVER_NAME-centos7-openjdk17]=$DOCKER_REGISTRY_NAME/client-$DRIVER_NAME-centos7-openjdk17-test:$TEST_IMAGE_VERSION
@@ -28,7 +27,6 @@ declare -A TEST_IMAGE_NAMES=(
 export TEST_IMAGE_NAMES
 
 declare -A TEST_IMAGE_DOCKERFILES=(
-    [$DRIVER_NAME-centos6-default]=jdbc-centos6-default-test
     [$DRIVER_NAME-centos7-openjdk8]=jdbc-centos7-openjdk-test
     [$DRIVER_NAME-centos7-openjdk11]=jdbc-centos7-openjdk-test
     [$DRIVER_NAME-centos7-openjdk17]=jdbc-centos7-openjdk-test
diff --git a/ci/image/Dockerfile.jdbc-centos6-default-test b/ci/image/Dockerfile.jdbc-centos6-default-test
deleted file mode 100644
index 2ff9478e7..000000000
--- a/ci/image/Dockerfile.jdbc-centos6-default-test
+++ /dev/null
@@ -1,67 +0,0 @@
-FROM centos:6.10
-
-# update OS
-RUN yum -y update && \
-    yum -y install epel-release && \
-    yum -y install centos-release-scl
-
-# python
-RUN yum -y install rh-python36
-COPY scripts/python3.6.sh /usr/local/bin/python3.6
-COPY scripts/python3.6.sh /usr/local/bin/python3
-RUN chmod a+x /usr/local/bin/python3.6 /usr/local/bin/python3
-COPY scripts/pip.sh /usr/local/bin/pip
-RUN chmod a+x /usr/local/bin/pip
-RUN pip install -U pip
-RUN pip install -U snowflake-connector-python
-
-# aws
-RUN pip install -U awscli
-COPY scripts/aws.sh /usr/local/bin/aws
-RUN chmod a+x /usr/local/bin/aws
-
-# install Development tools
-RUN yum -y groupinstall "Development Tools" && \
-    yum -y install zlib-devel
-
-# git
-RUN curl -o - https://mirrors.edge.kernel.org/pub/software/scm/git/git-2.26.0.tar.gz | tar xfz - && \
-    cd git-2.26.0 && \
-    ./configure --prefix=/opt/git && make && make install && \
-    ln -s /opt/git/bin/git /usr/local/bin/git
-
-# zstd
-RUN yum -y install zstd
-
-# jq
-RUN yum -y install jq
-
-# gosu
-RUN curl -o /usr/local/bin/gosu -SL "https://github.com/tianon/gosu/releases/download/1.11/gosu-amd64"
-RUN chmod +x /usr/local/bin/gosu
-COPY scripts/entrypoint.sh /usr/local/bin/entrypoint.sh
-RUN chmod +x /usr/local/bin/entrypoint.sh
-
-# Java
-RUN yum -y install java-1.8.0-openjdk-devel
-
-# Maven
-RUN curl -o - https://downloads.apache.org/maven/maven-3/3.6.3/binaries/apache-maven-3.6.3-bin.tar.gz | tar xfz - -C /opt && \
-    ln -s /opt/apache-maven-3.6.3/bin/mvn /usr/local/bin/mvn
-
-# workspace
-RUN mkdir -p /home/user && \
-    chmod 777 /home/user
-WORKDIR /home/user
-
-COPY pom.xml /root
-COPY dependencies /root/dependencies
-
-RUN cd /root && \
-    mvn -Dorg.slf4j.simpleLogger.log.org.apache.maven.cli.transfer.Slf4jMavenTransferListener=warn \
-        -Dnot-self-contained-jar \
-        --batch-mode --fail-never compile && \
-    mv $HOME/.m2 /home/user && \
-    chmod -R 777 /home/user/.m2
-
-ENTRYPOINT ["/usr/local/bin/entrypoint.sh"]