diff --git a/templates/src/php/docker/php5/Dockerfile.template b/templates/src/php/docker/php5/Dockerfile.template
deleted file mode 100644
index 1f97bc50a71..00000000000
--- a/templates/src/php/docker/php5/Dockerfile.template
+++ /dev/null
@@ -1,32 +0,0 @@
-%YAML 1.2
---- |
-  # Copyright 2019 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 php:5.6-zts-stretch
-
-  RUN apt-get -qq update && apt-get -qq install -y ${'\\'}
-    autoconf automake git libtool pkg-config ${'\\'}
-    valgrind wget zlib1g-dev
-
-  ARG MAKEFLAGS=-j8
-
-
-  WORKDIR /tmp
-
-  <%include file="../download_phpunit.include" />
-
-  <%include file="../pecl_ext_build_src.include" />
-
-  CMD ["/github/grpc/src/php/bin/run_tests.sh", "--skip-persistent-channel-tests"]