diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index ce291a8..0000000
--- a/.travis.yml
+++ /dev/null
@@ -1,337 +0,0 @@
-dist: trusty
-
-matrix:
-  include:
-  - os: linux
-    language: cpp
-    compiler: gcc
-    env: COMPILER="g++-4.8" CXX_STANDARD=11
-    addons:
-      apt:
-        sources:
-        - sourceline: 'ppa:ubuntu-toolchain-r/test'
-        - sourceline: 'ppa:mhier/libboost-latest'
-        packages:
-        - g++-4.8
-        - boost1.70
-  - os: linux
-    language: cpp
-    compiler: gcc
-    env: COMPILER="g++-4.9" CXX_STANDARD=11
-    addons:
-      apt:
-        sources:
-        - sourceline: 'ppa:ubuntu-toolchain-r/test'
-        - sourceline: 'ppa:mhier/libboost-latest'
-        packages:
-        - g++-4.9
-        - boost1.70
-  - os: linux
-    language: cpp
-    compiler: gcc
-    env: COMPILER="g++-5" CXX_STANDARD=11
-    addons:
-      apt:
-        sources:
-        - sourceline: 'ppa:ubuntu-toolchain-r/test'
-        - sourceline: 'ppa:mhier/libboost-latest'
-        packages:
-        - g++-5
-        - boost1.70
-  - os: linux
-    language: cpp
-    compiler: gcc
-    env: COMPILER="g++-6" CXX_STANDARD=11
-    addons:
-      apt:
-        sources:
-        - sourceline: 'ppa:ubuntu-toolchain-r/test'
-        - sourceline: 'ppa:mhier/libboost-latest'
-        packages:
-        - g++-6
-        - boost1.70
-  - os: linux
-    language: cpp
-    compiler: gcc
-    env: COMPILER="g++-7" CXX_STANDARD=11
-    addons:
-      apt:
-        sources:
-        - sourceline: 'ppa:ubuntu-toolchain-r/test'
-        - sourceline: 'ppa:mhier/libboost-latest'
-        packages:
-        - g++-7
-        - boost1.70
-  - os: linux
-    language: cpp
-    compiler: gcc
-    env: COMPILER="g++-8" CXX_STANDARD=11
-    addons:
-      apt:
-        sources:
-        - sourceline: 'ppa:ubuntu-toolchain-r/test'
-        - sourceline: 'ppa:mhier/libboost-latest'
-        packages:
-        - g++-8
-        - boost1.70
-  - os: linux
-    language: cpp
-    compiler: gcc
-    env: COMPILER="g++-8" CXX_STANDARD=11 TOML_HEAD=ON
-    addons:
-      apt:
-        sources:
-        - sourceline: 'ppa:ubuntu-toolchain-r/test'
-        - sourceline: 'ppa:mhier/libboost-latest'
-        packages:
-        - g++-8
-        - boost1.70
-  - os: linux
-    language: cpp
-    compiler: gcc
-    env: COMPILER="g++-8" CXX_STANDARD=14
-    addons:
-      apt:
-        sources:
-        - sourceline: 'ppa:ubuntu-toolchain-r/test'
-        - sourceline: 'ppa:mhier/libboost-latest'
-        packages:
-        - g++-8
-        - boost1.70
-  - os: linux
-    language: cpp
-    compiler: gcc
-    env: COMPILER="g++-8" CXX_STANDARD=17 REQUIRE_FILESYSTEM_LIBRARY=ON
-    addons:
-      apt:
-        sources:
-        - sourceline: 'ppa:ubuntu-toolchain-r/test'
-        - sourceline: 'ppa:mhier/libboost-latest'
-        packages:
-        - g++-8
-        - boost1.70
-  - os: linux
-    language: cpp
-    compiler: gcc
-    env: COMPILER="g++-8" CXX_STANDARD=17 TOML_HEAD=ON REQUIRE_FILESYSTEM_LIBRARY=ON
-    addons:
-      apt:
-        sources:
-        - sourceline: 'ppa:ubuntu-toolchain-r/test'
-        - sourceline: 'ppa:mhier/libboost-latest'
-        packages:
-        - g++-8
-        - boost1.70
-  - os: linux
-    language: cpp
-    compiler: clang
-    env: COMPILER="clang++-3.9" CXX_STANDARD=11
-    addons:
-      apt:
-        sources:
-        - sourceline: 'ppa:ubuntu-toolchain-r/test'
-        - sourceline: 'ppa:mhier/libboost-latest'
-        - llvm-toolchain-trusty-3.9
-        packages:
-        - g++-8
-        - clang-3.9
-        - boost1.70
-  - os: linux
-    language: cpp
-    compiler: clang
-    env: COMPILER="clang++-4.0" CXX_STANDARD=11
-    addons:
-      apt:
-        sources:
-        - sourceline: 'ppa:ubuntu-toolchain-r/test'
-        - sourceline: 'ppa:mhier/libboost-latest'
-        - llvm-toolchain-trusty-4.0
-        packages:
-        - g++-8
-        - clang-4.0
-        - boost1.70
-  - os: linux
-    language: cpp
-    compiler: clang
-    env: COMPILER="clang++-5.0" CXX_STANDARD=11
-    addons:
-      apt:
-        sources:
-        - sourceline: 'ppa:ubuntu-toolchain-r/test'
-        - sourceline: 'ppa:mhier/libboost-latest'
-        - llvm-toolchain-trusty-5.0
-        packages:
-        - g++-8
-        - clang-5.0
-        - boost1.70
-  - os: linux
-    language: cpp
-    compiler: clang
-    env: COMPILER="clang++-6.0" CXX_STANDARD=11
-    addons:
-      apt:
-        sources:
-        - sourceline: 'ppa:ubuntu-toolchain-r/test'
-        - sourceline: 'ppa:mhier/libboost-latest'
-        - llvm-toolchain-trusty-6.0
-        packages:
-        - g++-8
-        - clang-6.0
-        - boost1.70
-  - os: linux
-    language: cpp
-    compiler: clang
-    env: COMPILER="clang++-7" CXX_STANDARD=11
-    addons:
-      apt:
-        sources:
-        - sourceline: 'ppa:ubuntu-toolchain-r/test'
-        - sourceline: 'ppa:mhier/libboost-latest'
-        - llvm-toolchain-trusty-7
-        packages:
-        - g++-8
-        - clang-7
-        - boost1.70
-  - os: linux
-    language: cpp
-    compiler: clang
-    env: COMPILER="clang++-8" CXX_STANDARD=11
-    addons:
-      apt:
-        sources:
-        - sourceline: 'ppa:ubuntu-toolchain-r/test'
-        - sourceline: 'ppa:mhier/libboost-latest'
-        - llvm-toolchain-trusty-8
-        packages:
-        - g++-8
-        - clang-8
-        - boost1.70
-  - os: linux
-    language: cpp
-    compiler: clang
-    env: COMPILER="clang++-8" CXX_STANDARD=11 TOML_HEAD=ON
-    addons:
-      apt:
-        sources:
-        - sourceline: 'ppa:ubuntu-toolchain-r/test'
-        - sourceline: 'ppa:mhier/libboost-latest'
-        - llvm-toolchain-trusty-8
-        packages:
-        - g++-8
-        - clang-8
-        - boost1.70
-  - os: linux
-    language: cpp
-    compiler: clang
-    env: COMPILER="clang++-8" CXX_STANDARD=14
-    addons:
-      apt:
-        sources:
-        - sourceline: 'ppa:ubuntu-toolchain-r/test'
-        - sourceline: 'ppa:mhier/libboost-latest'
-        - llvm-toolchain-trusty-8
-        packages:
-        - clang-8
-        - g++-8
-        - boost1.70
-  - os: linux
-    language: cpp
-    compiler: clang
-    env: COMPILER="clang++-8" CXX_STANDARD=17 REQUIRE_FILESYSTEM_LIBRARY=ON
-    addons:
-      apt:
-        sources:
-        - sourceline: 'ppa:ubuntu-toolchain-r/test'
-        - sourceline: 'ppa:mhier/libboost-latest'
-        - llvm-toolchain-trusty-8
-        packages:
-        - clang-8
-        - g++-8
-        - boost1.70
-  - os: linux
-    language: cpp
-    compiler: clang
-    env: COMPILER="clang++-8" CXX_STANDARD=17 TOML_HEAD=ON REQUIRE_FILESYSTEM_LIBRARY=ON
-    addons:
-      apt:
-        sources:
-        - sourceline: 'ppa:ubuntu-toolchain-r/test'
-        - sourceline: 'ppa:mhier/libboost-latest'
-        - llvm-toolchain-trusty-8
-        packages:
-        - clang-8
-        - g++-8
-        - boost1.70
-  - os: linux
-    language: cpp
-    compiler: clang
-    env: COMPILER="clang++-8" CXX_STANDARD=11 WITH_ASAN=ON
-    addons:
-      apt:
-        sources:
-        - sourceline: 'ppa:ubuntu-toolchain-r/test'
-        - sourceline: 'ppa:mhier/libboost-latest'
-        - llvm-toolchain-trusty-8
-        packages:
-        - clang-8
-        - g++-8
-        - boost1.70
-  - os: linux
-    language: cpp
-    compiler: clang
-    env: COMPILER="clang++-8" CXX_STANDARD=11 WITH_UBSAN=ON
-    addons:
-      apt:
-        sources:
-        - sourceline: 'ppa:ubuntu-toolchain-r/test'
-        - sourceline: 'ppa:mhier/libboost-latest'
-        - llvm-toolchain-trusty-8
-        packages:
-        - clang-8
-        - g++-8
-        - boost1.70
-  - os: osx
-    language: cpp
-    compiler: clang
-
-script:
-- |
-  if [[ "${TRAVIS_OS_NAME}" == "linux" ]]; then
-    mkdir -p cmake
-    travis_retry wget "https://github.com/Kitware/CMake/releases/download/v3.14.5/cmake-3.14.5-Linux-x86_64.tar.gz"
-    tar xf cmake-3.14.5-Linux-x86_64.tar.gz -C cmake --strip-components=1
-    export PATH=${TRAVIS_BUILD_DIR}/cmake/bin:${PATH}
-  fi
-- |
-  if [[ "${CXX_STANDARD}" == "" ]]; then
-      export CXX_STANDARD="11"
-  fi
-- |
-  if [[ "${TOML_HEAD}" != "ON" ]]; then
-    export TOML_HEAD="OFF"
-  fi
-- echo "TOML_HEAD = ${TOML_HEAD}"
-- |
-  if [[ "${WITH_ASAN}" != "ON" ]]; then
-    export WITH_ASAN="OFF"
-  fi
-- echo "WITH_ASAN = ${WITH_ASAN}"
-- |
-  if [[ "${WITH_UBSAN}" != "ON" ]]; then
-    export WITH_UBSAN="OFF"
-  fi
-- echo "WITH_UBSAN = ${WITH_UBSAN}"
-- echo "REQUIRE_FILESYSTEM_LIBRARY = ${REQUIRE_FILESYSTEM_LIBRARY}"
-- |
-  if [[ "${REQUIRE_FILESYSTEM_LIBRARY}" != "ON" ]]; then
-    export REQUIRE_FILESYSTEM_LIBRARY="OFF"
-  fi
-- echo "REQUIRE_FILESYSTEM_LIBRARY = ${REQUIRE_FILESYSTEM_LIBRARY}"
-- cmake --version
-- mkdir build
-- cd build
-- echo "COMPILER     = ${COMPILER}"
-- echo "CXX_STANDARD = ${CXX_STANDARD}"
-- cmake -DCMAKE_CXX_COMPILER=$COMPILER -DCMAKE_CXX_STANDARD=$CXX_STANDARD -DTOML11_REQUIRE_FILESYSTEM_LIBRARY=${REQUIRE_FILESYSTEM_LIBRARY} -Dtoml11_BUILD_TEST=ON -DTOML11_USE_UNRELEASED_TOML_FEATURES=${TOML_HEAD} -Dtoml11_TEST_WITH_ASAN=${WITH_ASAN} -Dtoml11_TEST_WITH_UBSAN=${WITH_UBSAN} ..
-- make
-- ctest --output-on-failure
diff --git a/README.md b/README.md
index 57bb7e7..4affbf7 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,6 @@ toml11
 ======
 
 [![Build Status on GitHub Actions](https://github.com/ToruNiina/toml11/workflows/build/badge.svg)](https://github.com/ToruNiina/toml11/actions)
-[![Build Status on TravisCI](https://travis-ci.org/ToruNiina/toml11.svg?branch=master)](https://travis-ci.org/ToruNiina/toml11)
 [![Build status on Appveyor](https://ci.appveyor.com/api/projects/status/m2n08a926asvg5mg/branch/master?svg=true)](https://ci.appveyor.com/project/ToruNiina/toml11/branch/master)
 [![Build status on CircleCI](https://circleci.com/gh/ToruNiina/toml11/tree/master.svg?style=svg)](https://circleci.com/gh/ToruNiina/toml11/tree/master)
 [![Version](https://img.shields.io/github/release/ToruNiina/toml11.svg?style=flat)](https://github.com/ToruNiina/toml11/releases)