diff --git a/.circleci/config.yml b/.circleci/config.yml
deleted file mode 100644
index 8e720b5079..0000000000
--- a/.circleci/config.yml
+++ /dev/null
@@ -1,147 +0,0 @@
-version: 2.1
-
-executors:
-  machine_executor:
-    machine: true
-    working_directory: ~/repo
-
-commands:
-  build-and-test:
-    parameters:
-      node-version:
-        type: string
-        default: "10.16.3"
-      test-script:
-        type: string
-        default: "test-node"
-      upgrade-chrome:
-        type: string
-        default: ""
-
-    steps:
-      - checkout
-
-      - when:
-          condition: << parameters.upgrade-chrome >>
-          steps:
-            - run:
-                name: Upgrade chrome
-                command: |
-                  sudo apt-get purge chromium-browser
-                  sudo apt-get update
-                  sudo apt-get install -y dpkg libappindicator1 fonts-liberation libgbm1
-                  wget https://cdn.ethers.io/downloads/google-chrome-stable_current_amd64.deb
-                  sudo dpkg -i google-chrome*.deb
-                  google-chrome --version
-
-      - run:
-          name: Update C build environment
-          command: |
-            sudo add-apt-repository ppa:ubuntu-toolchain-r/test
-            sudo apt update
-            sudo apt install gcc-6 g++-6 libusb-1.0-0-dev libudev-dev
-            sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-6 60 --slave /usr/bin/g++ g++ /usr/bin/g++-6
-
-#      - run:
-#          name: Prepare to run parity
-#          command: |
-#            mkdir -p /tmp/parity/keys
-#            cp -r admin/test-parity/parity-keys /tmp/parity/keys/DevelopmentChain
-#            cp admin/test-parity/parity-dev.* /tmp/parity
-#            chmod -R 777 /tmp/parity
-#            ls -la /tmp/parity
-
-#      - run:
-#          name: Starting Parity
-#          command: |
-#           docker run -d \
-#            -p 8545:8545 \
-#            -p 8546:8546 \
-#            -p 30303:30303 \
-#            -p 30303:30303/udp \
-#            --name parity \
-#            -v /tmp/parity:/home/parity/.local/share/io.parity.ethereum parity/parity:v2.4.8-stable \
-#            --chain /home/parity/.local/share/io.parity.ethereum/parity-dev.json \
-#            --unlock=0x7454a8F5a7c7555d79B172C89D20E1f4e4CC226C \
-#            --password /home/parity/.local/share/io.parity.ethereum/parity-dev.pwds \
-#            --min-gas-price 1000000000 \
-#            --jsonrpc-interface all
-
-#      - run:
-#          name: Waiting for Parity to be ready
-#          command: |
-#            for i in `seq 1 20`;
-#            do
-#              nc -z localhost 8545 && echo Success && exit 0
-#              echo -n .
-#              sleep 2
-#            done
-#            docker ps -a
-#            docker logs parity 
-#            echo Failed waiting for Parity && exit 1
-
-      - run:
-          name: Run << parameters.test-script >> with node version << parameters.node-version >>
-          command: |
-           [ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh"  # This loads nvm
-           [ -s "$NVM_DIR/bash_completion" ] && \. "$NVM_DIR/bash_completion"
-           nvm install << parameters.node-version >>
-           node -v
-           npm -v
-           gcc --version
-           npm ci
-           npm run bootstrap
-           npm run << parameters.test-script >>
-
-jobs:
-  node-v8:
-    description: "test with node version 8"
-    executor: machine_executor
-    steps:
-      - build-and-test:
-          node-version: "8.16.1"
-          test-script: "test-node"
-
-  node-v10:
-    description: "test with node version 10"
-    executor: machine_executor
-    steps:
-      - build-and-test:
-          node-version: "10.16.3"
-          test-script: "test-node"
-
-  node-v12:
-    description: "test with node version 12"
-    executor: machine_executor
-    steps:
-      - build-and-test:
-          node-version: "12.13.1"
-          test-script: "test-node"
-
-  browser-esm:
-    description: "test browser with es6 module"
-    executor: machine_executor
-    steps:
-      - build-and-test:
-          node-version: "12.13.1"
-          test-script: "test-browser-esm"
-          upgrade-chrome: "true"
-
-  browser-umd:
-    description: "test browser with es3 module"
-    executor: machine_executor
-    steps:
-      - build-and-test:
-          node-version: "12.13.1"
-          test-script: "test-browser-umd"
-
-
-workflows:
-  version: 2
-  all:
-    jobs:
-      - node-v8
-      - node-v10
-      - node-v12
-      - browser-esm
-      - browser-umd