diff --git a/kokoro/linux/64-bit/Dockerfile b/kokoro/linux/64-bit/Dockerfile
index 189d0cf..965a097 100644
--- a/kokoro/linux/64-bit/Dockerfile
+++ b/kokoro/linux/64-bit/Dockerfile
@@ -71,8 +71,6 @@
   python2.6-dev \
   python3.3-dev \
   python3.4-dev \
-  # -- For Ruby --
-  ruby \
   # -- For C++ benchmarks --
   cmake \
   # -- For PHP --
@@ -102,21 +100,6 @@
 RUN pip install virtualenv tox yattag
 
 ##################
-# Ruby dependencies
-
-# Install rvm
-RUN gpg --keyserver hkp://keys.gnupg.net --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3
-RUN \curl -sSL https://get.rvm.io | bash -s stable
-
-# Install Ruby 2.1, Ruby 2.2 and JRuby 1.7
-RUN /bin/bash -l -c "rvm install ruby-2.1"
-RUN /bin/bash -l -c "rvm install ruby-2.2"
-RUN /bin/bash -l -c "rvm install jruby-1.7"
-RUN /bin/bash -l -c "echo 'gem: --no-ri --no-rdoc' > ~/.gemrc"
-RUN /bin/bash -l -c "echo 'export PATH=/usr/local/rvm/bin:$PATH' >> ~/.bashrc"
-RUN /bin/bash -l -c "gem install bundler --no-ri --no-rdoc"
-
-##################
 # Java dependencies
 
 # This step requires compiling protoc. :(
diff --git a/kokoro/linux/aarch64/ruby_build_and_run_tests_with_qemu_aarch64.sh b/kokoro/linux/aarch64/ruby_build_and_run_tests_with_qemu_aarch64.sh
deleted file mode 100755
index dc093bc..0000000
--- a/kokoro/linux/aarch64/ruby_build_and_run_tests_with_qemu_aarch64.sh
+++ /dev/null
@@ -1,17 +0,0 @@
-#!/bin/bash
-
-set -ex
-
-# go to the repo root
-cd $(dirname $0)/../../..
-
-gem install bundler
-
-cd ruby
-
-bundle
-rake
-rake clobber_package gem
-
-# run all the tests
-rake test
diff --git a/kokoro/linux/aarch64/test_ruby_aarch64.sh b/kokoro/linux/aarch64/test_ruby_aarch64.sh
deleted file mode 100755
index 91ee5f2..0000000
--- a/kokoro/linux/aarch64/test_ruby_aarch64.sh
+++ /dev/null
@@ -1,27 +0,0 @@
-#!/bin/bash
-
-set -ex
-
-# go to the repo root
-cd $(dirname $0)/../../..
-
-if [[ -t 0 ]]; then
-  DOCKER_TTY_ARGS="-it"
-else
-  # The input device on kokoro is not a TTY, so -it does not work.
-  DOCKER_TTY_ARGS=
-fi
-
-# crosscompile protoc as we will later need it for the ruby build.
-# we build it under the dockcross/manylinux2014-aarch64 image so that the resulting protoc binary is compatible
-# with a wide range of linux distros (including any docker images we will use later to build and test ruby)
-kokoro/linux/aarch64/dockcross_helpers/run_dockcross_manylinux2014_aarch64.sh kokoro/linux/aarch64/protoc_crosscompile_aarch64.sh
-
-# use an actual aarch64 docker image (with a real aarch64 ruby) to run build & test protobuf ruby under an emulator
-# * mount the protobuf root as /work to be able to access the crosscompiled files
-# * to avoid running the process inside docker as root (which can pollute the workspace with files owned by root), we force
-#   running under current user's UID and GID. To be able to do that, we need to provide a home directory for the user
-#   otherwise the UID would be homeless under the docker container and pip install wouldn't work. For simplicity,
-#   we just run map the user's home to a throwaway temporary directory
-
-docker run $DOCKER_TTY_ARGS --rm --user "$(id -u):$(id -g)" -e "HOME=/home/fake-user" -v "$(mktemp -d):/home/fake-user" -v "$(pwd)":/work -w /work arm64v8/ruby:2.7.3-buster kokoro/linux/aarch64/ruby_build_and_run_tests_with_qemu_aarch64.sh
\ No newline at end of file
diff --git a/kokoro/linux/dockerfile/test/ruby/Dockerfile b/kokoro/linux/dockerfile/test/ruby/Dockerfile
index 8362870..2ac91c2 100644
--- a/kokoro/linux/dockerfile/test/ruby/Dockerfile
+++ b/kokoro/linux/dockerfile/test/ruby/Dockerfile
@@ -35,8 +35,6 @@
 RUN /bin/bash -l -c "rvm install 2.6.0"
 RUN /bin/bash -l -c "rvm install 2.7.0"
 RUN /bin/bash -l -c "rvm install 3.0.0"
-RUN /bin/bash -l -c "rvm install jruby-9.2.19.0"
-RUN /bin/bash -l -c "rvm install jruby-9.3.0.0"
 
 RUN /bin/bash -l -c "echo 'gem: --no-ri --no-rdoc' > ~/.gemrc"
 RUN /bin/bash -l -c "echo 'export PATH=/usr/local/rvm/bin:$PATH' >> ~/.bashrc"
diff --git a/kokoro/linux/jruby92/build.sh b/kokoro/linux/jruby92/build.sh
deleted file mode 100755
index 5820115..0000000
--- a/kokoro/linux/jruby92/build.sh
+++ /dev/null
@@ -1,18 +0,0 @@
-#!/bin/bash
-#
-# This is the top-level script we give to Kokoro as the entry point for
-# running the "pull request" project:
-#
-# This script selects a specific Dockerfile (for building a Docker image) and
-# a script to run inside that image.  Then we delegate to the general
-# build_and_run_docker.sh script.
-
-# Change to repo root
-cd $(dirname $0)/../../..
-
-export DOCKERHUB_ORGANIZATION=protobuftesting
-export DOCKERFILE_DIR=kokoro/linux/dockerfile/test/ruby
-export DOCKER_RUN_SCRIPT=kokoro/linux/pull_request_in_docker.sh
-export OUTPUT_DIR=testoutput
-export TEST_SET="jruby92"
-./kokoro/linux/build_and_run_docker.sh
diff --git a/kokoro/linux/jruby92/continuous.cfg b/kokoro/linux/jruby92/continuous.cfg
deleted file mode 100644
index 3339584..0000000
--- a/kokoro/linux/jruby92/continuous.cfg
+++ /dev/null
@@ -1,11 +0,0 @@
-# Config file for running tests in Kokoro
-
-# Location of the build script in repository
-build_file: "protobuf/kokoro/linux/jruby92/build.sh"
-timeout_mins: 120
-
-action {
-  define_artifacts {
-    regex: "**/sponge_log.xml"
-  }
-}
diff --git a/kokoro/linux/jruby92/presubmit.cfg b/kokoro/linux/jruby92/presubmit.cfg
deleted file mode 100644
index 3339584..0000000
--- a/kokoro/linux/jruby92/presubmit.cfg
+++ /dev/null
@@ -1,11 +0,0 @@
-# Config file for running tests in Kokoro
-
-# Location of the build script in repository
-build_file: "protobuf/kokoro/linux/jruby92/build.sh"
-timeout_mins: 120
-
-action {
-  define_artifacts {
-    regex: "**/sponge_log.xml"
-  }
-}
diff --git a/kokoro/linux/jruby93/build.sh b/kokoro/linux/jruby93/build.sh
deleted file mode 100755
index 24c54d0..0000000
--- a/kokoro/linux/jruby93/build.sh
+++ /dev/null
@@ -1,18 +0,0 @@
-#!/bin/bash
-#
-# This is the top-level script we give to Kokoro as the entry point for
-# running the "pull request" project:
-#
-# This script selects a specific Dockerfile (for building a Docker image) and
-# a script to run inside that image.  Then we delegate to the general
-# build_and_run_docker.sh script.
-
-# Change to repo root
-cd $(dirname $0)/../../..
-
-export DOCKERHUB_ORGANIZATION=protobuftesting
-export DOCKERFILE_DIR=kokoro/linux/dockerfile/test/ruby
-export DOCKER_RUN_SCRIPT=kokoro/linux/pull_request_in_docker.sh
-export OUTPUT_DIR=testoutput
-export TEST_SET="jruby93"
-./kokoro/linux/build_and_run_docker.sh
diff --git a/kokoro/linux/jruby93/continuous.cfg b/kokoro/linux/jruby93/continuous.cfg
deleted file mode 100644
index 706d848..0000000
--- a/kokoro/linux/jruby93/continuous.cfg
+++ /dev/null
@@ -1,11 +0,0 @@
-# Config file for running tests in Kokoro
-
-# Location of the build script in repository
-build_file: "protobuf/kokoro/linux/jruby93/build.sh"
-timeout_mins: 120
-
-action {
-  define_artifacts {
-    regex: "**/sponge_log.xml"
-  }
-}
diff --git a/kokoro/linux/jruby93/presubmit.cfg b/kokoro/linux/jruby93/presubmit.cfg
deleted file mode 100644
index 706d848..0000000
--- a/kokoro/linux/jruby93/presubmit.cfg
+++ /dev/null
@@ -1,11 +0,0 @@
-# Config file for running tests in Kokoro
-
-# Location of the build script in repository
-build_file: "protobuf/kokoro/linux/jruby93/build.sh"
-timeout_mins: 120
-
-action {
-  define_artifacts {
-    regex: "**/sponge_log.xml"
-  }
-}
diff --git a/kokoro/linux/ruby25/build.sh b/kokoro/linux/ruby25/build.sh
deleted file mode 100755
index 1e82ec5..0000000
--- a/kokoro/linux/ruby25/build.sh
+++ /dev/null
@@ -1,18 +0,0 @@
-#!/bin/bash
-#
-# This is the top-level script we give to Kokoro as the entry point for
-# running the "pull request" project:
-#
-# This script selects a specific Dockerfile (for building a Docker image) and
-# a script to run inside that image.  Then we delegate to the general
-# build_and_run_docker.sh script.
-
-# Change to repo root
-cd $(dirname $0)/../../..
-
-export DOCKERHUB_ORGANIZATION=protobuftesting
-export DOCKERFILE_DIR=kokoro/linux/dockerfile/test/ruby
-export DOCKER_RUN_SCRIPT=kokoro/linux/pull_request_in_docker.sh
-export OUTPUT_DIR=testoutput
-export TEST_SET="ruby25"
-./kokoro/linux/build_and_run_docker.sh
diff --git a/kokoro/linux/ruby25/continuous.cfg b/kokoro/linux/ruby25/continuous.cfg
deleted file mode 100644
index dee2db0..0000000
--- a/kokoro/linux/ruby25/continuous.cfg
+++ /dev/null
@@ -1,11 +0,0 @@
-# Config file for running tests in Kokoro
-
-# Location of the build script in repository
-build_file: "protobuf/kokoro/linux/ruby25/build.sh"
-timeout_mins: 120
-
-action {
-  define_artifacts {
-    regex: "**/sponge_log.xml"
-  }
-}
diff --git a/kokoro/linux/ruby25/presubmit.cfg b/kokoro/linux/ruby25/presubmit.cfg
deleted file mode 100644
index dee2db0..0000000
--- a/kokoro/linux/ruby25/presubmit.cfg
+++ /dev/null
@@ -1,11 +0,0 @@
-# Config file for running tests in Kokoro
-
-# Location of the build script in repository
-build_file: "protobuf/kokoro/linux/ruby25/build.sh"
-timeout_mins: 120
-
-action {
-  define_artifacts {
-    regex: "**/sponge_log.xml"
-  }
-}
diff --git a/kokoro/linux/ruby26/build.sh b/kokoro/linux/ruby26/build.sh
deleted file mode 100755
index 72d2d45..0000000
--- a/kokoro/linux/ruby26/build.sh
+++ /dev/null
@@ -1,18 +0,0 @@
-#!/bin/bash
-#
-# This is the top-level script we give to Kokoro as the entry point for
-# running the "pull request" project:
-#
-# This script selects a specific Dockerfile (for building a Docker image) and
-# a script to run inside that image.  Then we delegate to the general
-# build_and_run_docker.sh script.
-
-# Change to repo root
-cd $(dirname $0)/../../..
-
-export DOCKERHUB_ORGANIZATION=protobuftesting
-export DOCKERFILE_DIR=kokoro/linux/dockerfile/test/ruby
-export DOCKER_RUN_SCRIPT=kokoro/linux/pull_request_in_docker.sh
-export OUTPUT_DIR=testoutput
-export TEST_SET="ruby26"
-./kokoro/linux/build_and_run_docker.sh
diff --git a/kokoro/linux/ruby26/continuous.cfg b/kokoro/linux/ruby26/continuous.cfg
deleted file mode 100644
index 4779065..0000000
--- a/kokoro/linux/ruby26/continuous.cfg
+++ /dev/null
@@ -1,11 +0,0 @@
-# Config file for running tests in Kokoro
-
-# Location of the build script in repository
-build_file: "protobuf/kokoro/linux/ruby26/build.sh"
-timeout_mins: 120
-
-action {
-  define_artifacts {
-    regex: "**/sponge_log.xml"
-  }
-}
diff --git a/kokoro/linux/ruby26/presubmit.cfg b/kokoro/linux/ruby26/presubmit.cfg
deleted file mode 100644
index 4779065..0000000
--- a/kokoro/linux/ruby26/presubmit.cfg
+++ /dev/null
@@ -1,11 +0,0 @@
-# Config file for running tests in Kokoro
-
-# Location of the build script in repository
-build_file: "protobuf/kokoro/linux/ruby26/build.sh"
-timeout_mins: 120
-
-action {
-  define_artifacts {
-    regex: "**/sponge_log.xml"
-  }
-}
diff --git a/kokoro/linux/ruby27/build.sh b/kokoro/linux/ruby27/build.sh
deleted file mode 100755
index c38ee36..0000000
--- a/kokoro/linux/ruby27/build.sh
+++ /dev/null
@@ -1,18 +0,0 @@
-#!/bin/bash
-#
-# This is the top-level script we give to Kokoro as the entry point for
-# running the "pull request" project:
-#
-# This script selects a specific Dockerfile (for building a Docker image) and
-# a script to run inside that image.  Then we delegate to the general
-# build_and_run_docker.sh script.
-
-# Change to repo root
-cd $(dirname $0)/../../..
-
-export DOCKERHUB_ORGANIZATION=protobuftesting
-export DOCKERFILE_DIR=kokoro/linux/dockerfile/test/ruby
-export DOCKER_RUN_SCRIPT=kokoro/linux/pull_request_in_docker.sh
-export OUTPUT_DIR=testoutput
-export TEST_SET="ruby27"
-./kokoro/linux/build_and_run_docker.sh
diff --git a/kokoro/linux/ruby27/continuous.cfg b/kokoro/linux/ruby27/continuous.cfg
deleted file mode 100644
index 9cce8c9..0000000
--- a/kokoro/linux/ruby27/continuous.cfg
+++ /dev/null
@@ -1,11 +0,0 @@
-# Config file for running tests in Kokoro
-
-# Location of the build script in repository
-build_file: "protobuf/kokoro/linux/ruby27/build.sh"
-timeout_mins: 120
-
-action {
-  define_artifacts {
-    regex: "**/sponge_log.xml"
-  }
-}
diff --git a/kokoro/linux/ruby27/presubmit.cfg b/kokoro/linux/ruby27/presubmit.cfg
deleted file mode 100644
index 9cce8c9..0000000
--- a/kokoro/linux/ruby27/presubmit.cfg
+++ /dev/null
@@ -1,11 +0,0 @@
-# Config file for running tests in Kokoro
-
-# Location of the build script in repository
-build_file: "protobuf/kokoro/linux/ruby27/build.sh"
-timeout_mins: 120
-
-action {
-  define_artifacts {
-    regex: "**/sponge_log.xml"
-  }
-}
diff --git a/kokoro/linux/ruby30/build.sh b/kokoro/linux/ruby30/build.sh
deleted file mode 100755
index 9e44575..0000000
--- a/kokoro/linux/ruby30/build.sh
+++ /dev/null
@@ -1,18 +0,0 @@
-#!/bin/bash
-#
-# This is the top-level script we give to Kokoro as the entry point for
-# running the "pull request" project:
-#
-# This script selects a specific Dockerfile (for building a Docker image) and
-# a script to run inside that image.  Then we delegate to the general
-# build_and_run_docker.sh script.
-
-# Change to repo root
-cd $(dirname $0)/../../..
-
-export DOCKERHUB_ORGANIZATION=protobuftesting
-export DOCKERFILE_DIR=kokoro/linux/dockerfile/test/ruby
-export DOCKER_RUN_SCRIPT=kokoro/linux/pull_request_in_docker.sh
-export OUTPUT_DIR=testoutput
-export TEST_SET="ruby30"
-./kokoro/linux/build_and_run_docker.sh
diff --git a/kokoro/linux/ruby30/continuous.cfg b/kokoro/linux/ruby30/continuous.cfg
deleted file mode 100644
index b03a335..0000000
--- a/kokoro/linux/ruby30/continuous.cfg
+++ /dev/null
@@ -1,11 +0,0 @@
-# Config file for running tests in Kokoro
-
-# Location of the build script in repository
-build_file: "protobuf/kokoro/linux/ruby30/build.sh"
-timeout_mins: 120
-
-action {
-  define_artifacts {
-    regex: "**/sponge_log.xml"
-  }
-}
diff --git a/kokoro/linux/ruby30/presubmit.cfg b/kokoro/linux/ruby30/presubmit.cfg
deleted file mode 100644
index b03a335..0000000
--- a/kokoro/linux/ruby30/presubmit.cfg
+++ /dev/null
@@ -1,11 +0,0 @@
-# Config file for running tests in Kokoro
-
-# Location of the build script in repository
-build_file: "protobuf/kokoro/linux/ruby30/build.sh"
-timeout_mins: 120
-
-action {
-  define_artifacts {
-    regex: "**/sponge_log.xml"
-  }
-}
diff --git a/kokoro/linux/ruby_aarch64/build.sh b/kokoro/linux/ruby_aarch64/build.sh
deleted file mode 100755
index 6473e0d..0000000
--- a/kokoro/linux/ruby_aarch64/build.sh
+++ /dev/null
@@ -1,16 +0,0 @@
-#!/bin/bash
-#
-# This is the top-level script we give to Kokoro as the entry point for
-# running the "continuous" and "presubmit" jobs.
-
-set -ex
-
-# Change to repo root
-cd $(dirname $0)/../../..
-
-# Initialize any submodules.
-git submodule update --init --recursive
-
-kokoro/linux/aarch64/qemu_helpers/prepare_qemu.sh
-
-kokoro/linux/aarch64/test_ruby_aarch64.sh
diff --git a/kokoro/linux/ruby_aarch64/continuous.cfg b/kokoro/linux/ruby_aarch64/continuous.cfg
deleted file mode 100644
index ae82696..0000000
--- a/kokoro/linux/ruby_aarch64/continuous.cfg
+++ /dev/null
@@ -1,11 +0,0 @@
-# Config file for running tests in Kokoro
-
-# Location of the build script in repository
-build_file: "protobuf/kokoro/linux/ruby_aarch64/build.sh"
-timeout_mins: 120
-
-action {
-  define_artifacts {
-    regex: "**/sponge_log.xml"
-  }
-}
diff --git a/kokoro/linux/ruby_aarch64/presubmit.cfg b/kokoro/linux/ruby_aarch64/presubmit.cfg
deleted file mode 100644
index ae82696..0000000
--- a/kokoro/linux/ruby_aarch64/presubmit.cfg
+++ /dev/null
@@ -1,11 +0,0 @@
-# Config file for running tests in Kokoro
-
-# Location of the build script in repository
-build_file: "protobuf/kokoro/linux/ruby_aarch64/build.sh"
-timeout_mins: 120
-
-action {
-  define_artifacts {
-    regex: "**/sponge_log.xml"
-  }
-}
diff --git a/kokoro/macos/ruby25/build.sh b/kokoro/macos/ruby25/build.sh
deleted file mode 100755
index 48c8940..0000000
--- a/kokoro/macos/ruby25/build.sh
+++ /dev/null
@@ -1,12 +0,0 @@
-#!/bin/bash
-#
-# Build file to set up and run tests
-
-# Change to repo root
-cd $(dirname $0)/../../..
-
-# Prepare worker environment to run tests
-KOKORO_INSTALL_RVM=yes
-source kokoro/macos/prepare_build_macos_rc
-
-./tests.sh ruby25
diff --git a/kokoro/macos/ruby25/continuous.cfg b/kokoro/macos/ruby25/continuous.cfg
deleted file mode 100644
index b3755e4..0000000
--- a/kokoro/macos/ruby25/continuous.cfg
+++ /dev/null
@@ -1,5 +0,0 @@
-# Config file for running tests in Kokoro
-
-# Location of the build script in repository
-build_file: "protobuf/kokoro/macos/ruby25/build.sh"
-timeout_mins: 1440
diff --git a/kokoro/macos/ruby25/presubmit.cfg b/kokoro/macos/ruby25/presubmit.cfg
deleted file mode 100644
index b3755e4..0000000
--- a/kokoro/macos/ruby25/presubmit.cfg
+++ /dev/null
@@ -1,5 +0,0 @@
-# Config file for running tests in Kokoro
-
-# Location of the build script in repository
-build_file: "protobuf/kokoro/macos/ruby25/build.sh"
-timeout_mins: 1440
diff --git a/kokoro/macos/ruby26/build.sh b/kokoro/macos/ruby26/build.sh
deleted file mode 100755
index 1b94fe1..0000000
--- a/kokoro/macos/ruby26/build.sh
+++ /dev/null
@@ -1,12 +0,0 @@
-#!/bin/bash
-#
-# Build file to set up and run tests
-
-# Change to repo root
-cd $(dirname $0)/../../..
-
-# Prepare worker environment to run tests
-KOKORO_INSTALL_RVM=yes
-source kokoro/macos/prepare_build_macos_rc
-
-./tests.sh ruby26
diff --git a/kokoro/macos/ruby26/continuous.cfg b/kokoro/macos/ruby26/continuous.cfg
deleted file mode 100644
index 688f63c..0000000
--- a/kokoro/macos/ruby26/continuous.cfg
+++ /dev/null
@@ -1,5 +0,0 @@
-# Config file for running tests in Kokoro
-
-# Location of the build script in repository
-build_file: "protobuf/kokoro/macos/ruby26/build.sh"
-timeout_mins: 1440
diff --git a/kokoro/macos/ruby26/presubmit.cfg b/kokoro/macos/ruby26/presubmit.cfg
deleted file mode 100644
index 688f63c..0000000
--- a/kokoro/macos/ruby26/presubmit.cfg
+++ /dev/null
@@ -1,5 +0,0 @@
-# Config file for running tests in Kokoro
-
-# Location of the build script in repository
-build_file: "protobuf/kokoro/macos/ruby26/build.sh"
-timeout_mins: 1440
diff --git a/kokoro/macos/ruby27/build.sh b/kokoro/macos/ruby27/build.sh
deleted file mode 100755
index baebdb7..0000000
--- a/kokoro/macos/ruby27/build.sh
+++ /dev/null
@@ -1,12 +0,0 @@
-#!/bin/bash
-#
-# Build file to set up and run tests
-
-# Change to repo root
-cd $(dirname $0)/../../..
-
-# Prepare worker environment to run tests
-KOKORO_INSTALL_RVM=yes
-source kokoro/macos/prepare_build_macos_rc
-
-./tests.sh ruby27
diff --git a/kokoro/macos/ruby27/continuous.cfg b/kokoro/macos/ruby27/continuous.cfg
deleted file mode 100644
index b10b455..0000000
--- a/kokoro/macos/ruby27/continuous.cfg
+++ /dev/null
@@ -1,5 +0,0 @@
-# Config file for running tests in Kokoro
-
-# Location of the build script in repository
-build_file: "protobuf/kokoro/macos/ruby27/build.sh"
-timeout_mins: 1440
diff --git a/kokoro/macos/ruby27/presubmit.cfg b/kokoro/macos/ruby27/presubmit.cfg
deleted file mode 100644
index b10b455..0000000
--- a/kokoro/macos/ruby27/presubmit.cfg
+++ /dev/null
@@ -1,5 +0,0 @@
-# Config file for running tests in Kokoro
-
-# Location of the build script in repository
-build_file: "protobuf/kokoro/macos/ruby27/build.sh"
-timeout_mins: 1440
diff --git a/kokoro/macos/ruby30/build.sh b/kokoro/macos/ruby30/build.sh
deleted file mode 100755
index b1e0641..0000000
--- a/kokoro/macos/ruby30/build.sh
+++ /dev/null
@@ -1,12 +0,0 @@
-#!/bin/bash
-#
-# Build file to set up and run tests
-
-# Change to repo root
-cd $(dirname $0)/../../..
-
-# Prepare worker environment to run tests
-KOKORO_INSTALL_RVM=yes
-source kokoro/macos/prepare_build_macos_rc
-
-./tests.sh ruby30
diff --git a/kokoro/macos/ruby30/continuous.cfg b/kokoro/macos/ruby30/continuous.cfg
deleted file mode 100644
index d505117..0000000
--- a/kokoro/macos/ruby30/continuous.cfg
+++ /dev/null
@@ -1,5 +0,0 @@
-# Config file for running tests in Kokoro
-
-# Location of the build script in repository
-build_file: "protobuf/kokoro/macos/ruby30/build.sh"
-timeout_mins: 1440
diff --git a/kokoro/macos/ruby30/presubmit.cfg b/kokoro/macos/ruby30/presubmit.cfg
deleted file mode 100644
index d505117..0000000
--- a/kokoro/macos/ruby30/presubmit.cfg
+++ /dev/null
@@ -1,5 +0,0 @@
-# Config file for running tests in Kokoro
-
-# Location of the build script in repository
-build_file: "protobuf/kokoro/macos/ruby30/build.sh"
-timeout_mins: 1440
diff --git a/kokoro/release/ruby/linux/build_artifacts.sh b/kokoro/release/ruby/linux/build_artifacts.sh
deleted file mode 100755
index 8855522..0000000
--- a/kokoro/release/ruby/linux/build_artifacts.sh
+++ /dev/null
@@ -1,14 +0,0 @@
-#!/bin/bash
-
-set -ex
-
-# change to repo root
-cd $(dirname $0)/../../../..
-
-source kokoro/release/ruby/linux/prepare_build.sh
-
-# ruby environment
-source kokoro/release/ruby/linux/ruby/ruby_build_environment.sh
-
-# build artifacts
-bash kokoro/release/ruby/linux/ruby/ruby_build.sh
diff --git a/kokoro/release/ruby/linux/continuous.cfg b/kokoro/release/ruby/linux/continuous.cfg
deleted file mode 100644
index dbc71b2..0000000
--- a/kokoro/release/ruby/linux/continuous.cfg
+++ /dev/null
@@ -1,8 +0,0 @@
-# Configuration for Linux release builds
-build_file: "protobuf/kokoro/release/ruby/linux/build_artifacts.sh"
-
-action {
-  define_artifacts {
-    regex: "github/protobuf/artifacts/**"
-  }
-}
diff --git a/kokoro/release/ruby/linux/prepare_build.sh b/kokoro/release/ruby/linux/prepare_build.sh
deleted file mode 100755
index 91d1868..0000000
--- a/kokoro/release/ruby/linux/prepare_build.sh
+++ /dev/null
@@ -1,12 +0,0 @@
-#!/bin/bash
-
-# Move docker's storage location to scratch disk so we don't run out of space.
-echo 'DOCKER_OPTS="${DOCKER_OPTS} --graph=/tmpfs/docker"' | sudo tee --append /etc/default/docker
-# Use container registry mirror for pulling docker images (should make downloads faster)
-# See https://cloud.google.com/container-registry/docs/using-dockerhub-mirroring
-echo 'DOCKER_OPTS="${DOCKER_OPTS} --registry-mirror=https://mirror.gcr.io"' | sudo tee --append /etc/default/docker
-sudo service docker restart
-
-# All artifacts come here
-mkdir artifacts
-export ARTIFACT_DIR=$(pwd)/artifacts
diff --git a/kokoro/release/ruby/linux/presubmit.cfg b/kokoro/release/ruby/linux/presubmit.cfg
deleted file mode 100644
index dbc71b2..0000000
--- a/kokoro/release/ruby/linux/presubmit.cfg
+++ /dev/null
@@ -1,8 +0,0 @@
-# Configuration for Linux release builds
-build_file: "protobuf/kokoro/release/ruby/linux/build_artifacts.sh"
-
-action {
-  define_artifacts {
-    regex: "github/protobuf/artifacts/**"
-  }
-}
diff --git a/kokoro/release/ruby/linux/release.cfg b/kokoro/release/ruby/linux/release.cfg
deleted file mode 100644
index dbc71b2..0000000
--- a/kokoro/release/ruby/linux/release.cfg
+++ /dev/null
@@ -1,8 +0,0 @@
-# Configuration for Linux release builds
-build_file: "protobuf/kokoro/release/ruby/linux/build_artifacts.sh"
-
-action {
-  define_artifacts {
-    regex: "github/protobuf/artifacts/**"
-  }
-}
diff --git a/kokoro/release/ruby/linux/ruby/ruby_build.sh b/kokoro/release/ruby/linux/ruby/ruby_build.sh
deleted file mode 100755
index f8ae962..0000000
--- a/kokoro/release/ruby/linux/ruby/ruby_build.sh
+++ /dev/null
@@ -1,18 +0,0 @@
-#!/bin/bash
-
-set -ex
-
-# Build protoc
-if test ! -e src/protoc; then
-  ./autogen.sh
-  ./configure
-  make -j4
-fi
-
-umask 0022
-pushd ruby
-gem install bundler -v 2.1.4
-bundle update && bundle exec rake gem:native
-ls pkg
-mv pkg/* $ARTIFACT_DIR
-popd
diff --git a/kokoro/release/ruby/linux/ruby/ruby_build_environment.sh b/kokoro/release/ruby/linux/ruby/ruby_build_environment.sh
deleted file mode 100755
index 87c0f75..0000000
--- a/kokoro/release/ruby/linux/ruby/ruby_build_environment.sh
+++ /dev/null
@@ -1,9 +0,0 @@
-#!/bin/bash
-
-set +ex
-[[ -s /etc/profile.d/rvm.sh ]] && . /etc/profile.d/rvm.sh
-set -e  # rvm commands are very verbose
-rvm --default use ruby-2.4.1
-# The version needs to be updated if the version specified in Gemfile.lock is changed
-gem install bundler -v '1.17.3'
-set -ex
diff --git a/kokoro/release/ruby/macos/build_artifacts.sh b/kokoro/release/ruby/macos/build_artifacts.sh
deleted file mode 100755
index a109d45..0000000
--- a/kokoro/release/ruby/macos/build_artifacts.sh
+++ /dev/null
@@ -1,16 +0,0 @@
-#!/bin/bash
-
-set -ex
-
-# change to repo root
-cd $(dirname $0)/../../../..
-
-# all artifacts come here
-mkdir artifacts
-export ARTIFACT_DIR=$(pwd)/artifacts
-
-# ruby environment
-bash kokoro/release/ruby/macos/ruby/ruby_build_environment.sh
-
-# build artifacts
-bash kokoro/release/ruby/macos/ruby/ruby_build.sh
diff --git a/kokoro/release/ruby/macos/continuous.cfg b/kokoro/release/ruby/macos/continuous.cfg
deleted file mode 100644
index cb1c08b..0000000
--- a/kokoro/release/ruby/macos/continuous.cfg
+++ /dev/null
@@ -1,8 +0,0 @@
-# Configuration for Mac OSX release builds
-build_file: "protobuf/kokoro/release/ruby/macos/build_artifacts.sh"
-
-action {
-  define_artifacts {
-    regex: "github/protobuf/artifacts/**"
-  }
-}
diff --git a/kokoro/release/ruby/macos/presubmit.cfg b/kokoro/release/ruby/macos/presubmit.cfg
deleted file mode 100644
index cb1c08b..0000000
--- a/kokoro/release/ruby/macos/presubmit.cfg
+++ /dev/null
@@ -1,8 +0,0 @@
-# Configuration for Mac OSX release builds
-build_file: "protobuf/kokoro/release/ruby/macos/build_artifacts.sh"
-
-action {
-  define_artifacts {
-    regex: "github/protobuf/artifacts/**"
-  }
-}
diff --git a/kokoro/release/ruby/macos/release.cfg b/kokoro/release/ruby/macos/release.cfg
deleted file mode 100644
index cb1c08b..0000000
--- a/kokoro/release/ruby/macos/release.cfg
+++ /dev/null
@@ -1,8 +0,0 @@
-# Configuration for Mac OSX release builds
-build_file: "protobuf/kokoro/release/ruby/macos/build_artifacts.sh"
-
-action {
-  define_artifacts {
-    regex: "github/protobuf/artifacts/**"
-  }
-}
diff --git a/kokoro/release/ruby/macos/ruby/ruby_build.sh b/kokoro/release/ruby/macos/ruby/ruby_build.sh
deleted file mode 100755
index 7f6c18f..0000000
--- a/kokoro/release/ruby/macos/ruby/ruby_build.sh
+++ /dev/null
@@ -1,17 +0,0 @@
-#!/bin/bash
-
-set -ex
-
-# Build protoc
-if test ! -e src/protoc; then
-  ./autogen.sh
-  ./configure
-  make -j4
-fi
-
-umask 0022
-pushd ruby
-bundle update && bundle exec rake gem:native
-ls pkg
-mv pkg/* $ARTIFACT_DIR
-popd
diff --git a/kokoro/release/ruby/macos/ruby/ruby_build_environment.sh b/kokoro/release/ruby/macos/ruby/ruby_build_environment.sh
deleted file mode 100755
index 0261207..0000000
--- a/kokoro/release/ruby/macos/ruby/ruby_build_environment.sh
+++ /dev/null
@@ -1,82 +0,0 @@
-#!/bin/bash
-
-set -ex
-
-# Fix permissions
-sudo chown -R $(whoami) $HOME/.rvm/
-sudo chown -R $(whoami) /Library/Ruby/
-
-set +ex  # rvm script is very verbose and exits with errorcode
-source $HOME/.rvm/scripts/rvm
-set -e  # rvm commands are very verbose
-time rvm install 2.5.0
-rvm use 2.5.0
-gem install rake-compiler --no-document
-# Pin to bundler with ruby 2.5 support
-gem install bundler -v 2.3.26 --no-document
-time rvm install 2.7.0
-rvm use 2.7.0 --default
-gem install rake-compiler --no-document
-gem install bundler --no-document
-rvm osx-ssl-certs status all
-rvm osx-ssl-certs update all
-set -ex
-
-rm -rf ~/.rake-compiler
-
-CROSS_RUBY=$(mktemp tmpfile.XXXXXXXX)
-
-curl https://raw.githubusercontent.com/rake-compiler/rake-compiler/72184e51779b6a3b9b8580b036a052fdc3181ced/tasks/bin/cross-ruby.rake > "$CROSS_RUBY"
-
-# See https://github.com/grpc/grpc/issues/12161 for verconf.h patch details
-patch "$CROSS_RUBY" << EOF
---- cross-ruby.rake	2020-12-11 11:17:53.000000000 +0900
-+++ patched	2020-12-11 11:18:52.000000000 +0900
-@@ -111,10 +111,12 @@
-     "--host=#{MINGW_HOST}",
-     "--target=#{MINGW_TARGET}",
-     "--build=#{RUBY_BUILD}",
--    '--enable-shared',
-+    '--enable-static',
-+    '--disable-shared',
-     '--disable-install-doc',
-+    '--without-gmp',
-     '--with-ext=',
--    'LDFLAGS=-pipe -s',
-+    'LDFLAGS=-pipe',
-   ]
-
-   # Force Winsock2 for Ruby 1.8, 1.9 defaults to it
-@@ -130,6 +132,7 @@
- # make
- file "#{build_dir}/ruby.exe" => ["#{build_dir}/Makefile"] do |t|
-   chdir File.dirname(t.prerequisites.first) do
-+    sh "test -s verconf.h || rm -f verconf.h"  # if verconf.h has size 0, make sure it gets re-built by make
-     sh MAKE
-   end
- end
-EOF
-
-MAKE="make -j8"
-
-set +x # rvm commands are very verbose
-rvm use 2.7.0
-set -x
-ruby --version | grep 'ruby 2.7.0'
-for v in 3.0.0 2.7.0 ; do
-  ccache -c
-  rake -f "$CROSS_RUBY" cross-ruby VERSION="$v" HOST=x86_64-darwin MAKE="$MAKE"
-  rake -f "$CROSS_RUBY" cross-ruby VERSION="$v" HOST=aarch64-darwin MAKE="$MAKE"
-done
-set +x
-rvm use 2.5.0
-set -x
-ruby --version | grep 'ruby 2.5.0'
-for v in 2.6.0 2.5.1; do
-  ccache -c
-  rake -f "$CROSS_RUBY" cross-ruby VERSION="$v" HOST=x86_64-darwin MAKE="$MAKE"
-  rake -f "$CROSS_RUBY" cross-ruby VERSION="$v" HOST=aarch64-darwin MAKE="$MAKE"
-done
-set +x
-rvm use 2.7.0
-set -x