diff --git a/templates/tools/dockerfile/test/cxx_clang_6_x64/Dockerfile.template b/templates/tools/dockerfile/test/cxx_clang_6_x64/Dockerfile.template
deleted file mode 100644
index 6199f20406b..00000000000
--- a/templates/tools/dockerfile/test/cxx_clang_6_x64/Dockerfile.template
+++ /dev/null
@@ -1,29 +0,0 @@
-%YAML 1.2
---- |
-  # Copyright 2021 gRPC authors.
-  #
-  # Licensed under the Apache License, Version 2.0 (the "License");
-  # you may not use this file except in compliance with the License.
-  # You may obtain a copy of the License at
-  #
-  #     http://www.apache.org/licenses/LICENSE-2.0
-  #
-  # Unless required by applicable law or agreed to in writing, software
-  # distributed under the License is distributed on an "AS IS" BASIS,
-  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  # See the License for the specific language governing permissions and
-  # limitations under the License.
-  
-  FROM silkeh/clang:6
-  
-  RUN apt update && apt -y upgrade && apt install -y build-essential curl git time wget zip && apt clean
-  <%include file="../../git_avoid_dubious_ownership_error.include"/>
-  <%include file="../../run_tests_python_deps.include"/>
-  <%include file="../../cxx_test_deps.include"/>
-  <%include file="../../cxx_deps.include"/>
-  <%include file="../../cmake.include"/>
-  <%include file="../../ccache.include"/>
-  <%include file="../../run_tests_addons.include"/>
-  
-  # Define the default command.
-  CMD ["bash"]
diff --git a/tools/bazelify_tests/dockerimage_current_versions.bzl b/tools/bazelify_tests/dockerimage_current_versions.bzl
index bf2a9b9e55b..f530880c612 100644
--- a/tools/bazelify_tests/dockerimage_current_versions.bzl
+++ b/tools/bazelify_tests/dockerimage_current_versions.bzl
@@ -95,7 +95,7 @@ DOCKERIMAGE_CURRENT_VERSIONS = {
     "tools/dockerfile/test/csharp_debian11_x64.current_version": "docker://us-docker.pkg.dev/grpc-testing/testing-images-public/csharp_debian11_x64@sha256:0763d919b17b4cfe5b65aff3bf911c04e9e4d46d11649858742033facd9f534f",
     "tools/dockerfile/test/cxx_alpine_x64.current_version": "docker://us-docker.pkg.dev/grpc-testing/testing-images-public/cxx_alpine_x64@sha256:10587bea5d163bf5c34c6157ebd1863d22863d9d38bbaf5135ffc6fbf2b73004",
     "tools/dockerfile/test/cxx_clang_18_x64.current_version": "docker://us-docker.pkg.dev/grpc-testing/testing-images-public/cxx_clang_18_x64@sha256:46beb9901d0c480a40724a3934677ef5e8d6b2f177517c98e67ccff5d881503f",
-    "tools/dockerfile/test/cxx_clang_6_x64.current_version": "docker://us-docker.pkg.dev/grpc-testing/testing-images-public/cxx_clang_6_x64@sha256:eebbaf353522d523ec9a7acb34bb3ae194e22ea7493c85c01437719e30da205d",
+    "tools/dockerfile/test/cxx_clang_7_x64.current_version": "docker://us-docker.pkg.dev/grpc-testing/testing-images-public/cxx_clang_7_x64@sha256:b35f94648ada85aab9110dae0ebca594cd278672d4bbce38312cefa372952cae",
     "tools/dockerfile/test/cxx_debian11_openssl102_x64.current_version": "docker://us-docker.pkg.dev/grpc-testing/testing-images-public/cxx_debian11_openssl102_x64@sha256:477ae0da7ff7faa9cf195c0d32472fec4cf8b7325505c63e00b5c794c9a4b1a7",
     "tools/dockerfile/test/cxx_debian11_openssl111_x64.current_version": "docker://us-docker.pkg.dev/grpc-testing/testing-images-public/cxx_debian11_openssl111_x64@sha256:d383e66d4a089f9305768e3037faa2a887ff91565b0f3ddd96985dca94e9754f",
     "tools/dockerfile/test/cxx_debian11_x64.current_version": "docker://us-docker.pkg.dev/grpc-testing/testing-images-public/cxx_debian11_x64@sha256:9f9285da21c1053ac715027e0cee66c20c70ebf016053328a4cee61ffd37e59b",
diff --git a/tools/bazelify_tests/test/portability_tests.bzl b/tools/bazelify_tests/test/portability_tests.bzl
index 8c45b33613c..363a7e3e361 100644
--- a/tools/bazelify_tests/test/portability_tests.bzl
+++ b/tools/bazelify_tests/test/portability_tests.bzl
@@ -61,7 +61,7 @@ def generate_run_tests_portability_tests(name):
             ["gcc10.2_openssl111", "--cmake_configure_extra_args=-DgRPC_SSL_PROVIDER=package", "tools/dockerfile/test/cxx_debian11_openssl111_x64.current_version"],
             ["gcc_12_openssl309", "--cmake_configure_extra_args=-DgRPC_SSL_PROVIDER=package", "tools/dockerfile/test/cxx_debian12_openssl309_x64.current_version"],
             ["gcc_musl", "", "tools/dockerfile/test/cxx_alpine_x64.current_version"],
-            ["clang_6", "--cmake_configure_extra_args=-DCMAKE_C_COMPILER=clang --cmake_configure_extra_args=-DCMAKE_CXX_COMPILER=clang++", "tools/dockerfile/test/cxx_clang_6_x64.current_version"],
+            ["clang_7", "--cmake_configure_extra_args=-DCMAKE_C_COMPILER=clang --cmake_configure_extra_args=-DCMAKE_CXX_COMPILER=clang++", "tools/dockerfile/test/cxx_clang_7_x64.current_version"],
             ["clang_18_cxx23", "--cmake_configure_extra_args=-DCMAKE_C_COMPILER=clang --cmake_configure_extra_args=-DCMAKE_CXX_COMPILER=clang++ --cmake_configure_extra_args=-DCMAKE_CXX_STANDARD=23", "tools/dockerfile/test/cxx_clang_18_x64.current_version"],
         ]
 
diff --git a/tools/dockerfile/test/cxx_clang_6_x64.current_version b/tools/dockerfile/test/cxx_clang_6_x64.current_version
deleted file mode 100644
index 0be6c7b665e..00000000000
--- a/tools/dockerfile/test/cxx_clang_6_x64.current_version
+++ /dev/null
@@ -1 +0,0 @@
-us-docker.pkg.dev/grpc-testing/testing-images-public/cxx_clang_6_x64:f21d78164b0720b4291bf295b6142da24183286b@sha256:eebbaf353522d523ec9a7acb34bb3ae194e22ea7493c85c01437719e30da205d
\ No newline at end of file
diff --git a/tools/dockerfile/test/cxx_clang_6_x64/Dockerfile b/tools/dockerfile/test/cxx_clang_6_x64/Dockerfile
deleted file mode 100644
index da4a04ba180..00000000000
--- a/tools/dockerfile/test/cxx_clang_6_x64/Dockerfile
+++ /dev/null
@@ -1,83 +0,0 @@
-# Copyright 2021 gRPC authors.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-FROM silkeh/clang:6
-
-RUN apt update && apt -y upgrade && apt install -y build-essential curl git time wget zip && apt clean
-#=================
-# Setup git to access working directory across docker boundary.
-# This avoids the "fatal: detected dubious ownership in repository XYZ"
-# git error.
-
-RUN git config --global --add safe.directory '*'
-RUN git config --global protocol.file.allow always
-
-#====================
-# run_tests.py python dependencies
-
-# Basic python dependencies to be able to run tools/run_tests python scripts
-# These dependencies are not sufficient to build gRPC Python, gRPC Python
-# deps are defined elsewhere (e.g. python_deps.include)
-RUN apt-get update && apt-get install -y \
-  python3 \
-  python3-pip \
-  python3-setuptools \
-  python3-yaml \
-  && apt-get clean
-
-# use pinned version of pip to avoid sudden breakages
-RUN python3 -m pip install --upgrade pip==19.3.1
-
-# TODO(jtattermusch): currently six is needed for tools/run_tests scripts
-# but since our python2 usage is deprecated, we should get rid of it.
-RUN python3 -m pip install six==1.16.0
-
-# Google Cloud Platform API libraries
-# These are needed for uploading test results to BigQuery (e.g. by tools/run_tests scripts)
-RUN python3 -m pip install --upgrade google-auth==1.23.0 google-api-python-client==1.12.8 oauth2client==4.1.0
-
-
-# Some cxx tests depend on the twisted package
-RUN python3 -m pip install twisted
-
-#=================
-# C++ dependencies
-RUN apt-get update && apt-get -y install libc++-dev clang && apt-get clean
-
-#=================
-# Install cmake
-# Note that this step should be only used for distributions that have new enough cmake to satisfy gRPC's cmake version requirement.
-
-RUN apt-get update && apt-get install -y cmake && apt-get clean
-
-#=================
-# Install ccache
-
-# Install ccache from source since ccache 3.x packaged with most linux distributions
-# does not support Redis backend for caching.
-RUN curl -sSL -o ccache.tar.gz https://github.com/ccache/ccache/releases/download/v4.7.5/ccache-4.7.5.tar.gz \
-    && tar -zxf ccache.tar.gz \
-    && cd ccache-4.7.5 \
-    && mkdir build && cd build \
-    && cmake -DCMAKE_BUILD_TYPE=Release -DZSTD_FROM_INTERNET=ON -DHIREDIS_FROM_INTERNET=ON .. \
-    && make -j4 && make install \
-    && cd ../.. \
-    && rm -rf ccache-4.7.5 ccache.tar.gz
-
-
-RUN mkdir /var/local/jenkins
-
-
-# Define the default command.
-CMD ["bash"]