diff --git a/.drone.star b/.drone.star
new file mode 100644
index 0000000..e924841
--- /dev/null
+++ b/.drone.star
@@ -0,0 +1,29 @@
+# Use, modification, and distribution are
+# subject to the Boost Software License, Version 1.0. (See accompanying
+# file LICENSE.txt)
+#
+# Copyright Rene Rivera 2020.
+
+# For Drone CI we use the Starlark scripting language to reduce duplication.
+# As the yaml syntax for Drone CI is rather limited.
+#
+#
+globalenv={}
+linuxglobalimage="cppalliance/droneubuntu1604:1"
+windowsglobalimage="cppalliance/dronevs2019"
+
+def main(ctx):
+  return [
+  linux_cxx("TOOLSET=gcc COMPILER=g++ CXXSTD=11 Job 0", "g++", packages="", buildtype="boost", buildscript="drone", image=linuxglobalimage, environment={'TOOLSET': 'gcc', 'COMPILER': 'g++', 'CXXSTD': '11', 'DRONE_JOB_UUID': 'b6589fc6ab'}, globalenv=globalenv),
+  linux_cxx("TOOLSET=gcc COMPILER=g++-5 CXXSTD=11,14,1z Job 1", "g++-5", packages="g++-5", buildtype="boost", buildscript="drone", image=linuxglobalimage, environment={'TOOLSET': 'gcc', 'COMPILER': 'g++-5', 'CXXSTD': '11,14,1z', 'DRONE_JOB_UUID': '356a192b79'}, globalenv=globalenv),
+  linux_cxx("TOOLSET=gcc COMPILER=g++-6 CXXSTD=11,14,1z Job 2", "g++-6", packages="g++-6", buildtype="boost", buildscript="drone", image=linuxglobalimage, environment={'TOOLSET': 'gcc', 'COMPILER': 'g++-6', 'CXXSTD': '11,14,1z', 'DRONE_JOB_UUID': 'da4b9237ba'}, globalenv=globalenv),
+  linux_cxx("TOOLSET=gcc COMPILER=g++-7 CXXSTD=11,14,17 Job 3", "g++-7", packages="g++-7", buildtype="boost", buildscript="drone", image=linuxglobalimage, environment={'TOOLSET': 'gcc', 'COMPILER': 'g++-7', 'CXXSTD': '11,14,17', 'DRONE_JOB_UUID': '77de68daec'}, globalenv=globalenv),
+  linux_cxx("TOOLSET=clang COMPILER=clang++ CXXSTD=11 Job 4", "clang++", packages="", buildtype="boost", buildscript="drone", image=linuxglobalimage, environment={'TOOLSET': 'clang', 'COMPILER': 'clang++', 'CXXSTD': '11', 'DRONE_JOB_UUID': '1b64538924'}, globalenv=globalenv),
+  linux_cxx("TOOLSET=clang COMPILER=clang++-4.0 CXXSTD=11, Job 5", "clang++-4.0", packages="clang-4.0 libstdc++-6-dev", llvm_os="xenial", llvm_ver="4.0", buildtype="boost", buildscript="drone", image=linuxglobalimage, environment={'TOOLSET': 'clang', 'COMPILER': 'clang++-4.0', 'CXXSTD': '11,14,1z', 'DRONE_JOB_UUID': 'ac3478d69a'}, globalenv=globalenv),
+  linux_cxx("TOOLSET=clang COMPILER=clang++-5.0 CXXSTD=11, Job 6", "clang++-5.0", packages="clang-5.0 libstdc++-7-dev", llvm_os="xenial", llvm_ver="5.0", buildtype="boost", buildscript="drone", image=linuxglobalimage, environment={'TOOLSET': 'clang', 'COMPILER': 'clang++-5.0', 'CXXSTD': '11,14,1z', 'DRONE_JOB_UUID': 'c1dfd96eea'}, globalenv=globalenv),
+  osx_cxx("TOOLSET=clang COMPILER=clang++ CXXSTD=11,14,1 Job 7", "clang++", packages="", buildtype="boost", buildscript="drone", xcode_version="8.3", environment={'TOOLSET': 'clang', 'COMPILER': 'clang++', 'CXXSTD': '11,14,1z', 'DRONE_JOB_UUID': '902ba3cda1'}, globalenv=globalenv),
+  osx_cxx("TOOLSET=clang COMPILER=clang++ CXXSTD=11,14,1 Job 8", "clang++", packages="", buildtype="boost", buildscript="drone", xcode_version="9.1", environment={'TOOLSET': 'clang', 'COMPILER': 'clang++', 'CXXSTD': '11,14,1z', 'DRONE_JOB_UUID': 'fe5dbbcea5'}, globalenv=globalenv),
+    ]
+
+# from https://github.com/boostorg/boost-ci
+load("@boost_ci//ci/drone/:functions.star", "linux_cxx","windows_cxx","osx_cxx","freebsd_cxx")
diff --git a/.drone/drone.sh b/.drone/drone.sh
new file mode 100755
index 0000000..6024dae
--- /dev/null
+++ b/.drone/drone.sh
@@ -0,0 +1,37 @@
+#!/bin/bash
+
+# Copyright 2020 Rene Rivera, Sam Darwin
+# Distributed under the Boost Software License, Version 1.0.
+# (See accompanying file LICENSE.txt or copy at http://boost.org/LICENSE_1_0.txt)
+
+set -e
+export TRAVIS_BUILD_DIR=$(pwd)
+export DRONE_BUILD_DIR=$(pwd)
+export TRAVIS_BRANCH=$DRONE_BRANCH
+export VCS_COMMIT_ID=$DRONE_COMMIT
+export GIT_COMMIT=$DRONE_COMMIT
+export REPO_NAME=$DRONE_REPO
+export PATH=~/.local/bin:/usr/local/bin:$PATH
+
+if [ "$DRONE_JOB_BUILDTYPE" == "boost" ]; then
+
+echo '==================================> INSTALL'
+
+BOOST_BRANCH=develop && [ "$TRAVIS_BRANCH" == "master" ] && BOOST_BRANCH=master || true
+cd ..
+git clone -b $BOOST_BRANCH https://github.com/boostorg/boost.git boost-root
+cd boost-root
+git submodule update --init tools/build
+git submodule update --init libs/config
+git submodule update --init tools/boostdep
+cp -r $TRAVIS_BUILD_DIR/* libs/coroutine2
+python tools/boostdep/depinst/depinst.py coroutine2
+./bootstrap.sh
+./b2 headers
+
+echo '==================================> SCRIPT'
+
+echo "using $TOOLSET : : $COMPILER ;" > ~/user-config.jam
+./b2 -j 3 libs/coroutine2/test toolset=$TOOLSET cxxstd=$CXXSTD
+
+fi
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..9370fb0
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,293 @@
+name: GitHub Actions CI
+
+on:
+  pull_request:
+  push:
+    branches:
+      - master
+      - develop
+      - githubactions*
+      - feature/**
+      - fix/**
+      - pr/**
+
+jobs:
+  posix:
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - name: "TOOLSET=gcc COMPILER=g++ CXXSTD=11 Job 0"
+            buildtype: "boost"
+            packages: ""
+            packages_to_remove: ""
+            os: "ubuntu-16.04"
+            cxx: "g++"
+            sources: ""
+            llvm_os: ""
+            llvm_ver: ""
+            toolset: "gcc"
+            compiler: "g++"
+            cxxstd: "11"
+          - name: "TOOLSET=gcc COMPILER=g++-5 CXXSTD=11,14,1z Job 1"
+            buildtype: "boost"
+            packages: "g++-5"
+            packages_to_remove: ""
+            os: "ubuntu-16.04"
+            cxx: "g++-5"
+            sources: ""
+            llvm_os: ""
+            llvm_ver: ""
+            toolset: "gcc"
+            compiler: "g++-5"
+            cxxstd: "11,14,1z"
+          - name: "TOOLSET=gcc COMPILER=g++-6 CXXSTD=11,14,1z Job 2"
+            buildtype: "boost"
+            packages: "g++-6"
+            packages_to_remove: ""
+            os: "ubuntu-16.04"
+            cxx: "g++-6"
+            sources: ""
+            llvm_os: ""
+            llvm_ver: ""
+            toolset: "gcc"
+            compiler: "g++-6"
+            cxxstd: "11,14,1z"
+          - name: "TOOLSET=gcc COMPILER=g++-7 CXXSTD=11,14,17 Job 3"
+            buildtype: "boost"
+            packages: "g++-7"
+            packages_to_remove: ""
+            os: "ubuntu-16.04"
+            cxx: "g++-7"
+            sources: ""
+            llvm_os: ""
+            llvm_ver: ""
+            toolset: "gcc"
+            compiler: "g++-7"
+            cxxstd: "11,14,17"
+          - name: "TOOLSET=clang COMPILER=clang++ CXXSTD=11 Job 4"
+            buildtype: "boost"
+            packages: ""
+            packages_to_remove: ""
+            os: "ubuntu-16.04"
+            cxx: "clang++"
+            sources: ""
+            llvm_os: ""
+            llvm_ver: ""
+            toolset: "clang"
+            compiler: "clang++"
+            cxxstd: "11"
+          - name: "TOOLSET=clang COMPILER=clang++-4.0 CXXSTD=11, Job 5"
+            buildtype: "boost"
+            packages: "clang-4.0 libstdc++-6-dev"
+            packages_to_remove: ""
+            os: "ubuntu-16.04"
+            cxx: "clang++-4.0"
+            sources: ""
+            llvm_os: "xenial"
+            llvm_ver: "4.0"
+            toolset: "clang"
+            compiler: "clang++-4.0"
+            cxxstd: "11,14"
+          - name: "TOOLSET=clang COMPILER=clang++-5.0 CXXSTD=11, Job 6"
+            buildtype: "boost"
+            packages: "clang-5.0 libstdc++-7-dev"
+            packages_to_remove: ""
+            os: "ubuntu-16.04"
+            cxx: "clang++-5.0"
+            sources: ""
+            llvm_os: "xenial"
+            llvm_ver: "5.0"
+            toolset: "clang"
+            compiler: "clang++-5.0"
+            cxxstd: "11,14,1z"
+
+    runs-on: ${{ matrix.os }}
+    container: ${{ matrix.container }}
+
+    steps:
+      - name: Check if running in container
+        if: matrix.container != ''
+        run: echo "GHA_CONTAINER=${{ matrix.container }}" >> $GITHUB_ENV
+
+      - uses: actions/checkout@v2
+
+      - name: linux
+        shell: bash
+        env:
+          CXX: ${{ matrix.cxx }}
+          SOURCES: ${{ matrix.sources }}
+          LLVM_OS: ${{ matrix.llvm_os }}
+          LLVM_VER: ${{ matrix.llvm_ver }}
+          PACKAGES: ${{ matrix.packages }}
+          PACKAGES_TO_REMOVE: ${{ matrix.packages_to_remove }}
+          JOB_BUILDTYPE: ${{ matrix.buildtype }}
+          TOOLSET: ${{ matrix.toolset }}
+          COMPILER: ${{ matrix.compiler }}
+          CXXSTD: ${{ matrix.cxxstd }}
+          TRAVIS_BRANCH: ${{ github.base_ref }}
+          TRAVIS_OS_NAME: "linux"
+        run: |
+          echo '==================================> SETUP'
+          echo '==================================> PACKAGES'
+          set -e
+          if [ -n "$PACKAGES_TO_REMOVE" ]; then sudo apt-get purge -y $PACKAGES_TO_REMOVE; fi
+          echo ">>>>> APT: REPO.."
+          for i in {1..3}; do sudo -E apt-add-repository -y "ppa:ubuntu-toolchain-r/test" && break || sleep 2; done
+          
+          if test -n "${LLVM_OS}" ; then
+              wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | sudo apt-key add -
+              if test -n "${LLVM_VER}" ; then
+                  sudo -E apt-add-repository "deb http://apt.llvm.org/${LLVM_OS}/ llvm-toolchain-${LLVM_OS}-${LLVM_VER} main"
+              else
+                  # Snapshot (i.e. trunk) build of clang
+                  sudo -E apt-add-repository "deb http://apt.llvm.org/${LLVM_OS}/ llvm-toolchain-${LLVM_OS} main"
+              fi
+          fi
+          echo ">>>>> APT: UPDATE.."
+          sudo -E apt-get -o Acquire::Retries=3 update
+          if test -n "${SOURCES}" ; then
+              echo ">>>>> APT: INSTALL SOURCES.."
+              for SOURCE in $SOURCES; do
+                  sudo -E apt-add-repository ppa:$SOURCE
+              done
+          fi
+          echo ">>>>> APT: INSTALL ${PACKAGES}.."
+          sudo -E DEBIAN_FRONTEND=noninteractive apt-get -o Acquire::Retries=3 -y --no-install-suggests --no-install-recommends install ${PACKAGES}
+
+          echo '==================================> INSTALL AND COMPILE'
+          set -e
+          export TRAVIS_BUILD_DIR=$(pwd)
+          export TRAVIS_BRANCH=${TRAVIS_BRANCH:-$(echo $GITHUB_REF | awk 'BEGIN { FS = "/" } ; { print $3 }')}
+          export VCS_COMMIT_ID=$GITHUB_SHA
+          export GIT_COMMIT=$GITHUB_SHA
+          export REPO_NAME=$(basename $GITHUB_REPOSITORY)
+          export USER=$(whoami)
+          export CC=${CC:-gcc}
+          export PATH=~/.local/bin:/usr/local/bin:$PATH
+
+          if [ "$JOB_BUILDTYPE" == "boost" ]; then
+
+          echo '==================================> INSTALL'
+
+          BOOST_BRANCH=develop && [ "$TRAVIS_BRANCH" == "master" ] && BOOST_BRANCH=master || true
+          cd ..
+          git clone -b $BOOST_BRANCH https://github.com/boostorg/boost.git boost-root
+          cd boost-root
+          git submodule update --init tools/build
+          git submodule update --init libs/config
+          git submodule update --init tools/boostdep
+          cp -r $TRAVIS_BUILD_DIR/* libs/coroutine2
+          python tools/boostdep/depinst/depinst.py coroutine2
+          ./bootstrap.sh
+          ./b2 headers
+
+          echo '==================================> SCRIPT'
+
+          echo "using $TOOLSET : : $COMPILER ;" > ~/user-config.jam
+          ./b2 -j 3 libs/coroutine2/test toolset=$TOOLSET cxxstd=$CXXSTD
+
+          fi
+# 
+#   osx:
+#     strategy:
+#       fail-fast: false
+#       matrix:
+#         include:
+#
+# Github Actions only supports certain Xcode versions
+# Change (or delete) the Xcode version for this job.
+# 
+#           - name: "TOOLSET=clang COMPILER=clang++ CXXSTD=11,14,1 Job 7"
+#             buildtype: "boost"
+#             packages: ""
+#             os: "macos-10.15"
+#             cxx: "clang++"
+#             sources: ""
+#             llvm_os: ""
+#             llvm_ver: ""
+#             xcode_version: "8.3"
+#             toolset: "clang"
+#             compiler: "clang++"
+#             cxxstd: "11,14,1z"
+#
+# Github Actions only supports certain Xcode versions
+# Change (or delete) the Xcode version for this job.
+# 
+#           - name: "TOOLSET=clang COMPILER=clang++ CXXSTD=11,14,1 Job 8"
+#             buildtype: "boost"
+#             packages: ""
+#             os: "macos-10.15"
+#             cxx: "clang++"
+#             sources: ""
+#             llvm_os: ""
+#             llvm_ver: ""
+#             xcode_version: "9.1"
+#             toolset: "clang"
+#             compiler: "clang++"
+#             cxxstd: "11,14,1z"
+# 
+# 
+#     runs-on: ${{ matrix.os }}
+# 
+#     steps:
+#       - uses: actions/checkout@v2
+# 
+#       - name: Set DEVELOPER_DIR
+#         if: matrix.xcode_version != ''
+#         run: echo "DEVELOPER_DIR=/Applications/Xcode_${{ matrix.xcode_version }}.app/Contents/Developer" >> $GITHUB_ENV
+#       - name: Test DEVELOPER_DIR
+#         run: echo $DEVELOPER_DIR
+# 
+#       - name: "osx"
+#         shell: bash
+#         env:
+#           CXX: ${{ matrix.cxx }}
+#           SOURCES: ${{ matrix.sources }}
+#           LLVM_OS: ${{ matrix.llvm_os }}
+#           LLVM_VER: ${{ matrix.llvm_ver }}
+#           PACKAGES: ${{ matrix.packages }}
+#           JOB_BUILDTYPE: ${{ matrix.buildtype }}
+#           TOOLSET: ${{ matrix.toolset }}
+#           COMPILER: ${{ matrix.compiler }}
+#           CXXSTD: ${{ matrix.cxxstd }}
+#           TRAVIS_BRANCH: ${{ github.base_ref }}
+#           TRAVIS_OS_NAME: "osx"
+#         run: |
+#           echo '==================================> SETUP'
+#           set -e
+#           sudo mv /Library/Developer/CommandLineTools /Library/Developer/CommandLineTools.bck
+#           echo '==================================> PACKAGES'
+#           echo '==================================> INSTALL AND COMPILE'
+#           set -e
+#           export TRAVIS_BUILD_DIR=$(pwd)
+#           export TRAVIS_BRANCH=${TRAVIS_BRANCH:-$(echo $GITHUB_REF | awk 'BEGIN { FS = "/" } ; { print $3 }')}
+#           export VCS_COMMIT_ID=$GITHUB_SHA
+#           export GIT_COMMIT=$GITHUB_SHA
+#           export REPO_NAME=$(basename $GITHUB_REPOSITORY)
+#           export USER=$(whoami)
+#           export CC=${CC:-gcc}
+#           export PATH=~/.local/bin:/usr/local/bin:$PATH
+# 
+#           if [ "$JOB_BUILDTYPE" == "boost" ]; then
+# 
+#           echo '==================================> INSTALL'
+# 
+#           BOOST_BRANCH=develop && [ "$TRAVIS_BRANCH" == "master" ] && BOOST_BRANCH=master || true
+#           cd ..
+#           git clone -b $BOOST_BRANCH https://github.com/boostorg/boost.git boost-root
+#           cd boost-root
+#           git submodule update --init tools/build
+#           git submodule update --init libs/config
+#           git submodule update --init tools/boostdep
+#           cp -r $TRAVIS_BUILD_DIR/* libs/coroutine2
+#           python tools/boostdep/depinst/depinst.py coroutine2
+#           ./bootstrap.sh
+#           ./b2 headers
+# 
+#           echo '==================================> SCRIPT'
+# 
+#           echo "using $TOOLSET : : $COMPILER ;" > ~/user-config.jam
+#           ./b2 -j 3 libs/coroutine2/test toolset=$TOOLSET cxxstd=$CXXSTD
+# 
+#           fi
diff --git a/example/same_fringe.cpp b/example/same_fringe.cpp
index a056105..33feb67 100644
--- a/example/same_fringe.cpp
+++ b/example/same_fringe.cpp
@@ -97,8 +97,8 @@ int main() {
                     traverse(left_d,out);
                     });
             std::cout << "left tree from d:\n";
-            std::copy(begin(left_d_reader),
-                    end(left_d_reader),
+            std::copy(std::begin(left_d_reader),
+                    std::end(left_d_reader),
                     std::ostream_iterator<std::string>(std::cout, " "));
             std::cout << std::endl;
 
@@ -107,8 +107,8 @@ int main() {
                     traverse(right_b,out);
                     });
             std::cout << "right tree from b:\n";
-            std::copy(begin(right_b_reader),
-                    end(right_b_reader),
+            std::copy(std::begin(right_b_reader),
+                    std::end(right_b_reader),
                     std::ostream_iterator<std::string>(std::cout, " "));
             std::cout << std::endl;
 
@@ -117,8 +117,8 @@ int main() {
                     traverse(right_x,out);
                     });
             std::cout << "right tree from x:\n";
-            std::copy(begin(right_x_reader),
-                    end(right_x_reader),
+            std::copy(std::begin(right_x_reader),
+                    std::end(right_x_reader),
                     std::ostream_iterator<std::string>(std::cout, " "));
             std::cout << std::endl;
         }
@@ -139,9 +139,9 @@ int main() {
 
             std::cout << "left tree from d == right tree from b? "
                 << std::boolalpha
-                << std::equal(begin(left_d_reader),
-                        end(left_d_reader),
-                        begin(right_b_reader))
+                << std::equal(std::begin(left_d_reader),
+                        std::end(left_d_reader),
+                        std::begin(right_b_reader))
                 << std::endl;
         }
     }
@@ -161,9 +161,9 @@ int main() {
 
             std::cout << "left tree from d == right tree from x? "
                 << std::boolalpha
-                << std::equal(begin(left_d_reader),
-                        end(left_d_reader),
-                        begin(right_x_reader))
+                << std::equal(std::begin(left_d_reader),
+                        std::end(left_d_reader),
+                        std::begin(right_x_reader))
                 << std::endl;
         }
     }
diff --git a/include/boost/coroutine2/detail/pull_coroutine.hpp b/include/boost/coroutine2/detail/pull_coroutine.hpp
index 0bb8ea9..96d10d6 100644
--- a/include/boost/coroutine2/detail/pull_coroutine.hpp
+++ b/include/boost/coroutine2/detail/pull_coroutine.hpp
@@ -294,6 +294,22 @@ end( pull_coroutine< T > &) {
 
 }}}
 
+namespace std {
+
+template< typename T >
+typename boost::coroutines2::detail::pull_coroutine< T >::iterator
+begin( boost::coroutines2::detail::pull_coroutine< T > & c) {
+    return boost::coroutines2::detail::begin( c);
+}
+
+template< typename T >
+typename boost::coroutines2::detail::pull_coroutine< T >::iterator
+end( boost::coroutines2::detail::pull_coroutine< T > & c) {
+    return boost::coroutines2::detail::end( c);
+}
+
+}
+
 #ifdef BOOST_HAS_ABI_HEADERS
 #  include BOOST_ABI_SUFFIX
 #endif
diff --git a/meta/libraries.json b/meta/libraries.json
index 37c84ae..253c7f0 100644
--- a/meta/libraries.json
+++ b/meta/libraries.json
@@ -10,5 +10,6 @@
     ],
     "maintainers": [
         "Oliver Kowalke <oliver.kowalke -at- gmail.com>"
-    ]
+    ],
+    "cxxstd": "11"
 }
diff --git a/test/test_coroutine.cpp b/test/test_coroutine.cpp
index 0a9da6a..d4fbd8b 100644
--- a/test/test_coroutine.cpp
+++ b/test/test_coroutine.cpp
@@ -518,14 +518,11 @@ void test_exceptions()
 void test_input_iterator()
 {
     {
-        using std::begin;
-        using std::end;
-
         std::vector< int > vec;
         coro::coroutine< int >::pull_type coro( f16);
-        coro::coroutine< int >::pull_type::iterator e = end( coro);
+        coro::coroutine< int >::pull_type::iterator e = std::end( coro);
         for (
-            coro::coroutine< int >::pull_type::iterator i = begin( coro);
+            coro::coroutine< int >::pull_type::iterator i = std::begin( coro);
             i != e; ++i)
         { vec.push_back( * i); }
         BOOST_CHECK_EQUAL( ( std::size_t)5, vec.size() );