diff --git a/.appveyor.yml b/.appveyor.yml
index fc77fc68..9f689410 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -1,3 +1,18 @@
+# This file is part of ssh-python.
+# Copyright (C) 2017-2022 Panos Kittenis and contributors.
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation, version 2.1.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 max_jobs: 5
 build:
   parallel: true
@@ -17,7 +32,7 @@ environment:
     PYTHON_DEF: "C:\\Python38-x64"
     PYTHON_VERSION: "3.8"
     # Python versions to build wheels for
-    PYTHONVERS: C:\Python36-x64 C:\Python37-x64 C:\Python38-x64 C:\Python39-x64
+    PYTHONVERS: C:\Python36-x64 C:\Python37-x64 C:\Python38-x64 C:\Python39-x64 C:\Python310-x64
     PYTHON_ARCH: "64"
 
 install:
diff --git a/.circleci/config.yml b/.circleci/config.yml
index c9173950..8dee7b07 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -1,3 +1,18 @@
+# This file is part of ssh-python.
+# Copyright (C) 2017-2021 Panos Kittenis and contributors.
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation, version 2.1.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 version: 2.1
 
 orbs:
@@ -72,10 +87,10 @@ jobs:
           command: |
             twine upload --skip-existing -u $PYPI_USER -p $PYPI_PASSWORD wheels/*
 
-  manylinux:
+  manylinux-x86_64:
     machine:
       image: ubuntu-1604:201903-01
-    steps:
+    steps: &manylinux-steps
       - checkout
       - run:
           name: sdist
@@ -93,7 +108,8 @@ jobs:
       - run:
           name: Deps
           command: |
-            sudo apt-get install python-pip
+            sudo apt-get install python3-pip
+            pyenv global 3.7.0 || pyenv global 3.9.1
             pip install -U pip
             pip install twine
             which twine
@@ -112,6 +128,12 @@ jobs:
           command: |
             twine upload --skip-existing -u $PYPI_USER -p $PYPI_PASSWORD dist/* wheelhouse/*
 
+  manylinux2014-aarch64:
+    machine:
+      image: ubuntu-2004:202101-01
+    resource_class: arm.medium
+    steps: *manylinux-steps
+
 workflows:
   version: 2.1
   main:
@@ -126,19 +148,21 @@ workflows:
           filters:
             tags:
               ignore: /.*/
-      - manylinux:
+      - manylinux-x86_64: &manylinux-wf
           context: Docker
           filters:
             tags:
               only: /.*/
             branches:
               ignore: /.*/
+      - manylinux2014-aarch64: *manylinux-wf
       - osx:
           matrix:
             parameters:
               xcode_ver:
-                - "11.6.0"
-                - "11.1.0"
+                - "13.1.0"
+                - "13.0.0"
+                - "12.5.1"
           context: Docker
           filters:
             tags:
diff --git a/_setup_libssh.py b/_setup_libssh.py
index e1224146..1f96fa16 100644
--- a/_setup_libssh.py
+++ b/_setup_libssh.py
@@ -1,3 +1,18 @@
+# This file is part of ssh-python.
+# Copyright (C) 2017-2022 Panos Kittenis and contributors.
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation, version 2.1.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 import os
 
 from sys import stderr
diff --git a/ci/build-manylinux.sh b/ci/build-manylinux.sh
index ef2a36cf..8b04b342 100755
--- a/ci/build-manylinux.sh
+++ b/ci/build-manylinux.sh
@@ -1,12 +1,39 @@
 #!/bin/bash -xe
+# This file is part of ssh-python.
+# Copyright (C) 2017-2022 Panos Kittenis and contributors.
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation, version 2.1.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+
 
 docker_tag="parallelssh/ssh-manylinux"
+docker_files=("ci/docker/manylinux/Dockerfile" "ci/docker/manylinux/Dockerfile.2014_x86_64")
 
 rm -rf local build ssh/libssh.* ssh/*.so
 python ci/appveyor/fix_version.py .
 
-docker pull $docker_tag || echo
-docker build --pull --cache-from $docker_tag ci/docker/manylinux -t $docker_tag
-if [[ -z "$CIRCLE_PR_NUMBER" ]]; then docker push $docker_tag; fi
-docker run --rm -v `pwd`:/io $docker_tag /io/ci/build-wheels.sh
-ls wheelhouse/
+if [[ $(uname -m) == "aarch64" ]]; then
+    docker_tag=${docker_tag}:aarch64
+    docker_files=("ci/docker/manylinux/Dockerfile.aarch64")
+fi
+
+for docker_file in "${docker_files[@]}"; do
+    if [[ ${docker_file} == "ci/docker/manylinux/Dockerfile_2014_x86_64" ]]; then
+        docker_tag="${docker_tag}:2014_x86_64"
+    fi
+    docker pull $docker_tag || echo
+    docker build --pull --cache-from $docker_tag ci/docker/manylinux -t $docker_tag -f ${docker_file}
+    if [[ -z "${CIRCLE_PULL_REQUEST}" ]]; then docker push $docker_tag; fi
+    docker run --rm -v "$(pwd)":/io $docker_tag /io/ci/build-wheels.sh
+    ls wheelhouse/
+done
diff --git a/ci/build-wheels.sh b/ci/build-wheels.sh
index 304ca7af..8df11faf 100755
--- a/ci/build-wheels.sh
+++ b/ci/build-wheels.sh
@@ -1,8 +1,24 @@
 #!/bin/bash -xe
+# This file is part of ssh-python.
+# Copyright (C) 2017-2022 Panos Kittenis and contributors.
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation, version 2.1.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+
 
 # Compile wheels
 rm -rf /io/build
-for PYBIN in `ls -1d /opt/python/*/bin | grep -v cpython`; do
+for PYBIN in $(ls -1d /opt/python/*/bin | grep -v cpython); do
     "${PYBIN}/pip" wheel /io/ -w wheelhouse/
 done
 
@@ -12,7 +28,7 @@ for whl in wheelhouse/*.whl; do
 done
 
 # Install packages and test
-for PYBIN in `ls -1d /opt/python/*/bin | grep -v cpython`; do
+for PYBIN in $(ls -1d /opt/python/*/bin | grep -v cpython); do
     "${PYBIN}/pip" install ssh-python --no-index -f /io/wheelhouse
     (cd "$HOME"; "${PYBIN}/python" -c 'from ssh.session import Session; Session()')
 done
diff --git a/ci/build_ssh.sh b/ci/build_ssh.sh
index e636dbbf..533f498e 100755
--- a/ci/build_ssh.sh
+++ b/ci/build_ssh.sh
@@ -1,4 +1,20 @@
 #!/bin/bash -xe
+# This file is part of ssh-python.
+# Copyright (C) 2017-2022 Panos Kittenis and contributors.
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation, version 2.1.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+
 
 if [ -d /usr/local/opt/openssl ]; then
     export OPENSSL_ROOT_DIR=/usr/local/opt/openssl
diff --git a/ci/docker/manylinux/Dockerfile b/ci/docker/manylinux/Dockerfile
index f3fc5cc7..2471acf4 100644
--- a/ci/docker/manylinux/Dockerfile
+++ b/ci/docker/manylinux/Dockerfile
@@ -2,6 +2,7 @@ FROM quay.io/pypa/manylinux2010_x86_64
 
 ENV OPENSSL openssl-1.1.1g
 ENV LIBSSH 0.9.6
+ENV KRB 1.18.4
 ENV SYSTEM_LIBSSH 1
 ENV CFLAGS "-g0 -s"
 
@@ -9,7 +10,7 @@ RUN yum install zlib-devel cmake3 -y
 
 ADD libssh-${LIBSSH}.tar.xz libssh.tar.xz
 ADD https://www.openssl.org/source/${OPENSSL}.tar.gz ${OPENSSL}.tar.gz
-ADD krb5-1.18.4.tar.xz krb5-1.18.4.tar.xz
+ADD krb5-${KRB}.tar.xz krb5-${KRB}.tar.xz
 
 RUN tar -xzf ${OPENSSL}.tar.gz
 # Openssl
@@ -18,7 +19,7 @@ RUN cd ${OPENSSL} && \
     make -j6 && make install_sw
 
 # Kerberos
-RUN cd krb5-1.18.4.tar.xz/krb5-1.18.4/src && \
+RUN cd krb5-${KRB}.tar.xz/krb5-${KRB}/src && \
     ./configure && \
     make -j6 && \
     make install
@@ -29,6 +30,6 @@ RUN mkdir -p build_libssh && cd build_libssh && \
           -DWITH_GSS_API=ON && \
     make -j6 install/strip
 
-RUN rm -rf ${OPENSSL}* libssh build_libssh krb5-1.18.4.tar.xz
+RUN rm -rf ${OPENSSL}* libssh build_libssh krb5-${KRB}.tar.xz
 
 VOLUME /var/cache
diff --git a/ci/docker/manylinux/Dockerfile.2014_x86_64 b/ci/docker/manylinux/Dockerfile.2014_x86_64
new file mode 100644
index 00000000..d3243755
--- /dev/null
+++ b/ci/docker/manylinux/Dockerfile.2014_x86_64
@@ -0,0 +1,35 @@
+FROM quay.io/pypa/manylinux2014_x86_64
+
+ENV OPENSSL openssl-1.1.1g
+ENV LIBSSH 0.9.6
+ENV KRB 1.18.4
+ENV SYSTEM_LIBSSH 1
+ENV CFLAGS "-g0 -s"
+
+RUN yum install zlib-devel cmake3 -y
+
+ADD libssh-${LIBSSH}.tar.xz libssh.tar.xz
+ADD https://www.openssl.org/source/${OPENSSL}.tar.gz ${OPENSSL}.tar.gz
+ADD krb5-${KRB}.tar.xz krb5-${KRB}.tar.xz
+
+RUN tar -xzf ${OPENSSL}.tar.gz
+# Openssl
+RUN cd ${OPENSSL} && \
+    ./config --prefix=/usr --openssldir=/usr/openssl threads shared && \
+    make -j6 && make install_sw
+
+# Kerberos
+RUN cd krb5-${KRB}.tar.xz/krb5-${KRB}/src && \
+    ./configure && \
+    make -j6 && \
+    make install
+
+# Libssh
+RUN mkdir -p build_libssh && cd build_libssh && \
+    cmake3 ../libssh.tar.xz/libssh-${LIBSSH} -DCMAKE_BUILD_TYPE=Release \
+          -DWITH_GSS_API=ON && \
+    make -j6 install/strip
+
+RUN rm -rf ${OPENSSL}* libssh build_libssh krb5-${KRB}.tar.xz
+
+VOLUME /var/cache
diff --git a/ci/docker/manylinux/Dockerfile.aarch64 b/ci/docker/manylinux/Dockerfile.aarch64
new file mode 100644
index 00000000..735e7874
--- /dev/null
+++ b/ci/docker/manylinux/Dockerfile.aarch64
@@ -0,0 +1,36 @@
+FROM quay.io/pypa/manylinux2014_aarch64
+
+ENV OPENSSL openssl-1.1.1g
+ENV LIBSSH 0.9.6
+ENV KRB 1.18.4
+ENV SYSTEM_LIBSSH 1
+ENV CFLAGS "-g0 -s"
+
+RUN yum install epel-release -y
+RUN yum install zlib-devel cmake3 -y
+
+ADD libssh-${LIBSSH}.tar.xz libssh.tar.xz
+ADD https://www.openssl.org/source/${OPENSSL}.tar.gz ${OPENSSL}.tar.gz
+ADD krb5-${KRB}.tar.xz krb5-${KRB}.tar.xz
+
+RUN tar -xzf ${OPENSSL}.tar.gz
+# Openssl
+RUN cd ${OPENSSL} && \
+    ./config --prefix=/usr --openssldir=/usr/openssl threads shared && \
+    make -j6 && make install_sw
+
+# Kerberos
+RUN cd krb5-${KRB}.tar.xz/krb5-${KRB}/src && \
+    ./configure && \
+    make -j6 && \
+    make install
+
+# Libssh
+RUN mkdir -p build_libssh && cd build_libssh && \
+    cmake3 ../libssh.tar.xz/libssh-${LIBSSH} -DCMAKE_BUILD_TYPE=Release \
+          -DWITH_GSS_API=ON && \
+    make -j6 install/strip
+
+RUN rm -rf ${OPENSSL}* libssh build_libssh krb5-${KRB}.tar.xz
+
+VOLUME /var/cache
diff --git a/ci/osx-wheel.sh b/ci/osx-wheel.sh
index 537754e4..e525ba0d 100755
--- a/ci/osx-wheel.sh
+++ b/ci/osx-wheel.sh
@@ -1,4 +1,20 @@
 #!/bin/bash -xe
+# This file is part of ssh-python.
+# Copyright (C) 2017-2022 Panos Kittenis and contributors.
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation, version 2.1.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+
 
 pip3 install -U virtualenv
 python3 -m virtualenv -p "$(which python3)" venv
@@ -20,7 +36,7 @@ ls -l wheels/*.whl
 rm -f /usr/local/lib/libssh*
 pip3 install -v wheels/*.whl
 pwd; mkdir -p temp; cd temp; pwd
-python3 -c "from ssh.session import Session; Session()" && echo "Import successfull"
+python3 -c "from ssh.session import Session; Session()" && echo "Import successful"
 cd ..; pwd
 set +x
 deactivate
diff --git a/ci/pyenv-wheel.sh b/ci/pyenv-wheel.sh
deleted file mode 100755
index 47ba5024..00000000
--- a/ci/pyenv-wheel.sh
+++ /dev/null
@@ -1,45 +0,0 @@
-#!/bin/bash -xe
-
-brew install pyenv || brew outdated pyenv || brew upgrade pyenv
-pyenv install --list
-
-export PYENV_VERSION=${PYENV:-3.6.4}
-if [[ ! -d "$HOME/.pyenv/versions/$PYENV_VERSION" ]]; then
-    pyenv install $PYENV_VERSION
-fi
-pyenv global $PYENV_VERSION
-pyenv versions
-
-set +x
-eval "$(pyenv init -)"
-set -x
-
-which python
-python -m pip install -U virtualenv
-python -m virtualenv -p "$(which python)" venv
-
-set +x
-source venv/bin/activate
-set -x
-
-python -V
-python -m pip install -U setuptools pip
-pip install -U delocate wheel
-pip wheel .
-cp /usr/local/lib/libssh* .
-delocate-listdeps --all *.whl
-delocate-wheel -v *.whl
-delocate-listdeps --all *.whl
-
-ls -l *.whl
-rm -f *.dylib
-pip install -v *.whl
-pwd; mkdir -p temp; cd temp; pwd
-python -c "from ssh.session import Session; Session()" && echo "Import successfull"
-cd ..; pwd
-set +x
-deactivate
-set -x
-
-mv -f *.whl wheels/
-ls -lh wheels
diff --git a/setup.py b/setup.py
index c6059a92..fde24df0 100644
--- a/setup.py
+++ b/setup.py
@@ -65,7 +65,7 @@
 
 runtime_library_dirs = ["$ORIGIN/."] if not SYSTEM_LIBSSH else None
 _lib_dir = os.path.abspath("./local/lib") if not SYSTEM_LIBSSH else "/usr/local/lib"
-include_dirs = ["./local/include"] if (ON_WINDOWS or ON_RTD) or \
+include_dirs = ["./local/include", "./libssh/include"] if (ON_WINDOWS or ON_RTD) or \
                not SYSTEM_LIBSSH else ["/usr/local/include"]
 
 extensions = [