diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index fe1a1250..00000000
--- a/.travis.yml
+++ /dev/null
@@ -1,24 +0,0 @@
-sudo: required
-
-os:
-  - osx
-  - linux
-  - windows
-
-language: go
-go:
-  - "1.11.x"
-go_import_path: v2ray.com/core
-
-git:
-  depth: 5
-
-before_script:
-  - uname -a
-  - date
-
-script:
-  - go test -p 1 -tags json -v v2ray.com/core/...
-
-after_success:
-  - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then ./testing/coverage/coverall; fi
diff --git a/appveyor.yml b/appveyor.yml
deleted file mode 100644
index fcdcb2a3..00000000
--- a/appveyor.yml
+++ /dev/null
@@ -1,34 +0,0 @@
-image: Visual Studio 2017
-
-platform:
-  - x64
-  - x86
-
-branches:
-  only:
-    - master
-
-version: "1.0.{build}"
-
-environment:
-  global:
-    GOPATH: C:\gopath
-    GOVERSION: "1.11.2"
-
-install:
-  - set PATH=%GOPATH%\bin;c:\go\bin;%PATH%
-  - rmdir c:\go /s /q
-  - appveyor DownloadFile https://storage.googleapis.com/golang/go%GOVERSION%.windows-amd64.zip
-  - 7z x go%GOVERSION%.windows-amd64.zip -y -oC:\ > NUL
-  - go version
-  - go get -t v2ray.com/core/...
-  - go get -t v2ray.com/ext/...
-
-build_script:
-  - go build v2ray.com/core/main
-  - go build v2ray.com/ext/tools/control/main
-
-build: off
-
-test_script:
-  - go test -p 1 -v v2ray.com/core/...
diff --git a/shippable.yml b/shippable.yml
deleted file mode 100644
index 5a3c8956..00000000
--- a/shippable.yml
+++ /dev/null
@@ -1,20 +0,0 @@
-# Golang is not supported on Shippable ARM64 images. We install it by ourself.
-language: c
-
-runtime:
-  nodePool: shippable_shared_aarch64
-
-branches:
-  only:
-    - master
-
-build:
-  ci:
-    - uname -a
-    - curl -L -o golang.tar.gz https://dl.google.com/go/go1.11.2.linux-arm64.tar.gz
-    - tar -C /usr/local -xzf golang.tar.gz
-    - export PATH=$PATH:/usr/local/go/bin
-    - export GOPATH=/v2ray
-    - go get -t v2ray.com/core/...
-    - go get -t v2ray.com/ext/...
-    - go test -p 1 -v v2ray.com/core/...