diff --git a/.circleci/config.yml b/.circleci/config.yml
deleted file mode 100644
index 987657cc0..000000000
--- a/.circleci/config.yml
+++ /dev/null
@@ -1,544 +0,0 @@
-version: 2.1
-orbs:
-  codecov: codecov/codecov@1.1.1
-  azure-cli: circleci/azure-cli@1.0.0
-
-jobs:
-
-  build:
-    description: Build the citus extension
-    parameters:
-      pg_major:
-        description: postgres major version building citus for
-        type: integer
-      image:
-        description: docker image to use for the build
-        type: string
-        default: citus/extbuilder
-      image_tag:
-        description: tag to use for the docker image
-        type: string
-    docker:
-      - image: '<< parameters.image >>:<< parameters.image_tag >>'
-    steps:
-      - checkout
-      - run:
-          name: 'Configure, Build, and Install'
-          command: |
-            ./ci/build-citus.sh
-      - persist_to_workspace:
-          root: .
-          paths:
-            - build-<< parameters.pg_major >>/*
-            - install-<<parameters.pg_major >>.tar
-
-  check-style:
-    docker:
-      - image: 'citus/stylechecker:latest'
-    steps:
-      - checkout
-      - run:
-          name: 'Check Style'
-          command: citus_indent --check
-      - run:
-          name: 'Fix whitespace'
-          command: ci/editorconfig.sh
-      - run:
-          name: 'Check if whitespace fixing changed anything, install editorconfig if it did'
-          command: git diff --exit-code
-      - run:
-          name: 'Remove useless declarations'
-          command: ci/remove_useless_declarations.sh
-      - run:
-          name: 'Check if changed'
-          command: git diff --cached --exit-code
-      - run:
-          name: 'Normalize test output'
-          command: ci/normalize_expected.sh
-      - run:
-          name: 'Check if changed'
-          command: git diff --exit-code
-      - run:
-          name: 'Check for C-style comments in migration files'
-          command: ci/disallow_c_comments_in_migrations.sh
-      - run:
-          name: 'Check if changed'
-          command: git diff --exit-code
-      - run:
-          name: 'Check for lengths of changelog entries'
-          command: ci/disallow_long_changelog_entries.sh
-      - run:
-          name: 'Check for banned C API usage'
-          command: ci/banned.h.sh
-      - run:
-          name: 'Check for tests missing in schedules'
-          command: ci/check_all_tests_are_run.sh
-      - run:
-          name: 'Check if all CI scripts are actually run'
-          command: ci/check_all_ci_scripts_are_run.sh
-
-  check-sql-snapshots:
-    docker:
-      - image: 'citus/extbuilder:latest'
-    steps:
-      - checkout
-      - run:
-          name: 'Check Snapshots'
-          command: ci/check_sql_snapshots.sh
-
-  test-pg-upgrade:
-    description: Runs postgres upgrade tests
-    parameters:
-      old_pg_major:
-        description: 'postgres major version to use before the upgrade'
-        type: integer
-      new_pg_major:
-        description: 'postgres major version to upgrade to'
-        type: integer
-      image:
-        description: 'docker image to use as for the tests'
-        type: string
-        default: citus/pgupgradetester
-      image_tag:
-        description: 'docker image tag to use'
-        type: string
-        default: latest
-    docker:
-      - image: '<< parameters.image >>:<< parameters.image_tag >>'
-    working_directory: /home/circleci/project
-    steps:
-      - checkout
-      - attach_workspace:
-          at: .
-      - run:
-          name: 'Install Extension'
-          command: |
-            tar xfv "${CIRCLE_WORKING_DIRECTORY}/install-<< parameters.old_pg_major >>.tar" --directory /
-            tar xfv "${CIRCLE_WORKING_DIRECTORY}/install-<< parameters.new_pg_major >>.tar" --directory /
-      - run:
-          name: 'Configure'
-          command: |
-            chown -R circleci .
-            gosu circleci ./configure
-      - run:
-          name: 'Enable core dumps'
-          command: |
-            ulimit -c unlimited
-      - run:
-          name: 'Install and test postgres upgrade'
-          command: |
-            gosu circleci \
-              make -C src/test/regress \
-                check-pg-upgrade \
-                old-bindir=/usr/lib/postgresql/<< parameters.old_pg_major >>/bin \
-                new-bindir=/usr/lib/postgresql/<< parameters.new_pg_major >>/bin
-          no_output_timeout: 2m
-      - run:
-          name: 'Regressions'
-          command: |
-            if [ -f "src/test/regress/regression.diffs" ]; then
-              cat src/test/regress/regression.diffs
-              exit 1
-            fi
-          when: on_fail
-      - run:
-          name: 'Copy coredumps'
-          command: |
-            mkdir -p /tmp/core_dumps
-            if ls core.* 1> /dev/null 2>&1; then
-                cp core.* /tmp/core_dumps
-            fi
-          when: on_fail
-      - store_artifacts:
-          name: 'Save regressions'
-          path: src/test/regress/regression.diffs
-          when: on_fail
-      - store_artifacts:
-          name: 'Save core dumps'
-          path: /tmp/core_dumps
-          when: on_fail
-      - codecov/upload:
-          flags: 'test_<< parameters.old_pg_major >>_<< parameters.new_pg_major >>,upgrade'
-
-  test-citus-upgrade:
-    description: Runs citus upgrade tests
-    parameters:
-      pg_major:
-        description: "postgres major version"
-        type: integer
-      image:
-        description: 'docker image to use as for the tests'
-        type: string
-        default: citus/citusupgradetester
-      image_tag:
-        description: 'docker image tag to use'
-        type: string
-    docker:
-      - image: '<< parameters.image >>:<< parameters.image_tag >>'
-    working_directory: /home/circleci/project
-    steps:
-      - checkout
-      - attach_workspace:
-          at: .
-      - run:
-          name: 'Configure'
-          command: |
-            chown -R circleci .
-            gosu circleci ./configure
-      - run:
-          name: 'Enable core dumps'
-          command: |
-            ulimit -c unlimited
-      - run:
-          name: 'Install and test citus upgrade'
-          command: |
-            # run make check-citus-upgrade for all citus versions
-            # the image has ${CITUS_VERSIONS} set with all verions it contains the binaries of
-            for citus_version in ${CITUS_VERSIONS}; do \
-              gosu circleci \
-                make -C src/test/regress \
-                  check-citus-upgrade \
-                  bindir=/usr/lib/postgresql/${PG_MAJOR}/bin \
-                  citus-pre-tar=/install-pg11-citus${citus_version}.tar \
-                  citus-post-tar=/home/circleci/project/install-$PG_MAJOR.tar; \
-            done;
-
-            # run make check-citus-upgrade-mixed for all citus versions
-            # the image has ${CITUS_VERSIONS} set with all verions it contains the binaries of
-            for citus_version in ${CITUS_VERSIONS}; do \
-              gosu circleci \
-                make -C src/test/regress \
-                  check-citus-upgrade-mixed \
-                  bindir=/usr/lib/postgresql/${PG_MAJOR}/bin \
-                  citus-pre-tar=/install-pg11-citus${citus_version}.tar \
-                  citus-post-tar=/home/circleci/project/install-$PG_MAJOR.tar; \
-            done;
-          no_output_timeout: 2m
-      - run:
-          name: 'Regressions'
-          command: |
-            if [ -f "src/test/regress/regression.diffs" ]; then
-              cat src/test/regress/regression.diffs
-              exit 1
-            fi
-          when: on_fail
-      - run:
-          name: 'Copy coredumps'
-          command: |
-            mkdir -p /tmp/core_dumps
-            if ls core.* 1> /dev/null 2>&1; then
-                cp core.* /tmp/core_dumps
-            fi
-          when: on_fail
-      - store_artifacts:
-          name: 'Save regressions'
-          path: src/test/regress/regression.diffs
-          when: on_fail
-      - store_artifacts:
-          name: 'Save core dumps'
-          path: /tmp/core_dumps
-          when: on_fail
-      - codecov/upload:
-          flags: 'test_<< parameters.pg_major >>,upgrade'
-
-  test-citus:
-    description: Runs the common tests of citus
-    parameters:
-      pg_major:
-        description: "postgres major version"
-        type: integer
-      image:
-        description: 'docker image to use as for the tests'
-        type: string
-        default: citus/exttester
-      image_tag:
-        description: 'docker image tag to use'
-        type: string
-      make:
-        description: "make target"
-        type: string
-    docker:
-      - image: '<< parameters.image >>:<< parameters.image_tag >>'
-    working_directory: /home/circleci/project
-    steps:
-      - checkout
-      - attach_workspace:
-          at: .
-      - run:
-          name: 'Install Extension'
-          command: |
-            tar xfv "${CIRCLE_WORKING_DIRECTORY}/install-${PG_MAJOR}.tar" --directory /
-      - run:
-          name: 'Configure'
-          command: |
-            chown -R circleci .
-            gosu circleci ./configure
-      - run:
-          name: 'Enable core dumps'
-          command: |
-            ulimit -c unlimited
-      - run:
-          name: 'Run Test'
-          command: |
-            gosu circleci make -C src/test/regress << parameters.make >>
-          no_output_timeout: 2m
-      - run:
-          name: 'Regressions'
-          command: |
-            if [ -f "src/test/regress/regression.diffs" ]; then
-              cat src/test/regress/regression.diffs
-              exit 1
-            fi
-          when: on_fail
-      - run:
-          name: 'Copy coredumps'
-          command: |
-            mkdir -p /tmp/core_dumps
-            if ls core.* 1> /dev/null 2>&1; then
-                cp core.* /tmp/core_dumps
-            fi
-          when: on_fail
-      - store_artifacts:
-          name: 'Save regressions'
-          path: src/test/regress/regression.diffs
-          when: on_fail
-      - store_artifacts:
-          name: 'Save core dumps'
-          path: /tmp/core_dumps
-          when: on_fail
-      - codecov/upload:
-          flags: 'test_<< parameters.pg_major >>,<< parameters.make >>'
-          when: always
-
-  check-merge-to-enterprise:
-    docker:
-      - image: citus/extbuilder:13.0
-    working_directory: /home/circleci/project
-    steps:
-      - checkout
-      - run:
-          command: |
-            ci/check_enterprise_merge.sh
-
-  ch_benchmark:
-    docker:
-      - image: buildpack-deps:stretch
-    working_directory: /home/circleci/project
-    steps:
-      - checkout
-      - azure-cli/install
-      - azure-cli/login-with-service-principal
-      - run:
-          command: |
-            cd ./src/test/hammerdb
-            sh run_hammerdb.sh citusbot_ch_benchmark_rg
-          name: install dependencies and run ch_benchmark tests
-          no_output_timeout: 20m
-
-  tpcc_benchmark:
-    docker:
-      - image: buildpack-deps:stretch
-    working_directory: /home/circleci/project
-    steps:
-      - checkout
-      - azure-cli/install
-      - azure-cli/login-with-service-principal
-      - run:
-          command: |
-            cd ./src/test/hammerdb
-            sh run_hammerdb.sh citusbot_tpcc_benchmark_rg
-          name: install dependencies and run ch_benchmark tests
-          no_output_timeout: 20m
-
-workflows:
-  version: 2
-  build_and_test:
-    jobs:
-
-      - check-merge-to-enterprise:
-          filters:
-            branches:
-              ignore:
-                - /release-[0-9]+\.[0-9]+.*/ # match with releaseX.Y.*
-
-      - build:
-          name: build-11
-          pg_major: 11
-          image_tag: '11.9'
-      - build:
-          name: build-12
-          pg_major: 12
-          image_tag: '12.4'
-      - build:
-          name: build-13
-          pg_major: 13
-          image_tag: '13.0'
-
-      - check-style
-      - check-sql-snapshots
-
-      - test-citus:
-          name: 'test-11_check-multi'
-          pg_major: 11
-          image_tag: '11.9'
-          make: check-multi
-          requires: [build-11]
-      - test-citus:
-          name: 'test-11_check-mx'
-          pg_major: 11
-          image_tag: '11.9'
-          make: check-multi-mx
-          requires: [build-11]
-      - test-citus:
-          name: 'test-11_check-vanilla'
-          pg_major: 11
-          image_tag: '11.9'
-          make: check-vanilla
-          requires: [build-11]
-      - test-citus:
-          name: 'test-11_check-isolation'
-          pg_major: 11
-          image_tag: '11.9'
-          make: check-isolation
-          requires: [build-11]
-      - test-citus:
-          name: 'test-11_check-worker'
-          pg_major: 11
-          image_tag: '11.9'
-          make: check-worker
-          requires: [build-11]
-      - test-citus:
-          name: 'test-11_check-follower-cluster'
-          pg_major: 11
-          image_tag: '11.9'
-          make: check-follower-cluster
-          requires: [build-11]
-      - test-citus:
-          name: 'test-11_check-failure'
-          pg_major: 11
-          image: citus/failtester
-          image_tag: '11.9'
-          make: check-failure
-          requires: [build-11]
-
-      - test-citus:
-          name: 'test-12_check-multi'
-          pg_major: 12
-          image_tag: '12.4'
-          make: check-multi
-          requires: [build-12]
-      - test-citus:
-          name: 'test-12_check-mx'
-          pg_major: 12
-          image_tag: '12.4'
-          make: check-multi-mx
-          requires: [build-12]
-      - test-citus:
-          name: 'test-12_check-vanilla'
-          pg_major: 12
-          image_tag: '12.4'
-          make: check-vanilla
-          requires: [build-12]
-      - test-citus:
-          name: 'test-12_check-isolation'
-          pg_major: 12
-          image_tag: '12.4'
-          make: check-isolation
-          requires: [build-12]
-      - test-citus:
-          name: 'test-12_check-worker'
-          pg_major: 12
-          image_tag: '12.4'
-          make: check-worker
-          requires: [build-12]
-      - test-citus:
-          name: 'test-12_check-follower-cluster'
-          pg_major: 12
-          image_tag: '12.4'
-          make: check-follower-cluster
-          requires: [build-12]
-      - test-citus:
-          name: 'test-12_check-failure'
-          pg_major: 12
-          image: citus/failtester
-          image_tag: '12.4'
-          make: check-failure
-          requires: [build-12]
-
-      - test-citus:
-          name: 'test-13_check-multi'
-          pg_major: 13
-          image_tag: '13.0'
-          make: check-multi
-          requires: [build-13]
-      - test-citus:
-          name: 'test-13_check-mx'
-          pg_major: 13
-          image_tag: '13.0'
-          make: check-multi-mx
-          requires: [build-13]
-      - test-citus:
-          name: 'test-13_check-vanilla'
-          pg_major: 13
-          image_tag: '13.0'
-          make: check-vanilla
-          requires: [build-13]
-      - test-citus:
-          name: 'test-13_check-isolation'
-          pg_major: 13
-          image_tag: '13.0'
-          make: check-isolation
-          requires: [build-13]
-      - test-citus:
-          name: 'test-13_check-worker'
-          pg_major: 13
-          image_tag: '13.0'
-          make: check-worker
-          requires: [build-13]
-      - test-citus:
-          name: 'test-13_check-follower-cluster'
-          pg_major: 13
-          image_tag: '13.0'
-          make: check-follower-cluster
-          requires: [build-13]
-
-      - test-citus:
-          name: 'test-13_check-failure'
-          pg_major: 13
-          image: citus/failtester
-          image_tag: '13.0'
-          make: check-failure
-          requires: [build-13]
-
-      - test-pg-upgrade:
-          name: 'test-11-12_check-pg-upgrade'
-          old_pg_major: 11
-          new_pg_major: 12
-          image_tag: latest
-          requires: [build-11,build-12]
-
-      - test-pg-upgrade:
-          name: 'test-12-13_check-pg-upgrade'
-          old_pg_major: 12
-          new_pg_major: 13
-          image_tag: latest
-          requires: [build-12,build-13]
-
-      - test-citus-upgrade:
-          name: test-11_check-citus-upgrade
-          pg_major: 11
-          image_tag: '11.9'
-          requires: [build-11]
-
-      - ch_benchmark:
-          requires: [build-13]
-          filters:
-            branches:
-              only:
-                - /ch_benchmark\/.*/ # match with ch_benchmark/ prefix
-      - tpcc_benchmark:
-          requires: [build-13]
-          filters:
-            branches:
-              only:
-                - /tpcc_benchmark\/.*/ # match with tpcc_benchmark/ prefix
diff --git a/ci/check_all_ci_scripts_are_run.sh b/ci/check_all_ci_scripts_are_run.sh
index 0b7abb3e3..a0b4484ee 100755
--- a/ci/check_all_ci_scripts_are_run.sh
+++ b/ci/check_all_ci_scripts_are_run.sh
@@ -11,11 +11,11 @@ source ci/ci_helpers.sh
 ci_scripts=$(
     find ci/ -iname "*.sh" |
     sed -E 's#^ci/##g' |
-    grep -v -E '^(ci_helpers.sh|fix_style.sh)$'
+    grep -v -E '^(ci_helpers.sh|fix_style.sh|check_enterprise_merge.sh)$'
 )
 for script in $ci_scripts; do
-    if ! grep "\\bci/$script\\b" .circleci/config.yml > /dev/null; then
-        echo "ERROR: CI script with name \"$script\" is not actually used in .circleci/config.yml"
+    if ! grep "\\bci/$script\\b" -r .github > /dev/null; then
+        echo "ERROR: CI script with name \"$script\" is not actually used in .github folder"
         exit 1
     fi
     if ! grep "^## \`$script\`\$" ci/README.md > /dev/null; then