diff --git a/contrib/aur/README.md b/contrib/aur/README.md
new file mode 100644
--- /dev/null
+++ b/contrib/aur/README.md
@@ -0,0 +1,13 @@
+# Update the AUR packages
+
+Edit the `PKGBUILD` for each package:
+ - To package a new version, update the `pkgver` value and reset `pkgrel` to 0.
+ - To re-package the same version, only increment the `pkgrel` value.
+
+You need to run in an archlinux environment and have write permission to the
+AUR repositories. Then install the prerequisites and run the update script:
+
+```shell
+pacman -S --needed base-devel git pacman-contrib
+./update-aur.sh
+```
diff --git a/contrib/aur/bitcoin-abc-qt/PKGBUILD b/contrib/aur/bitcoin-abc-qt/PKGBUILD
--- a/contrib/aur/bitcoin-abc-qt/PKGBUILD
+++ b/contrib/aur/bitcoin-abc-qt/PKGBUILD
@@ -7,7 +7,7 @@
 arch=('i686' 'x86_64')
 url="https://bitcoinabc.org"
 depends=('boost-libs' 'libevent' 'desktop-file-utils' 'qt5-base' 'protobuf' 'openssl' 'miniupnpc' 'zeromq' 'qrencode' 'jemalloc')
-makedepends=('cmake' 'ninja' 'boost' 'qt5-tools')
+makedepends=('cmake' 'ninja' 'boost' 'qt5-tools' 'python')
 license=('MIT')
 source=(https://github.com/Bitcoin-ABC/bitcoin-abc/archive/v$pkgver.tar.gz
         bitcoin.conf
@@ -15,12 +15,6 @@
         bitcoin.service
         bitcoin-reindex.service
         bitcoin.install)
-sha256sums=('feaffb2129f49813692ec17ba5675a3ac44e6d0560af55bb4d1d2f160c5b4a0b'
-            'c30e5c7e0e97b001fdeac5f4510d5ebc0e0499ec086325e845db609a24f2e22f'
-            '8f05207b586916d489b7d25a68eaacf6e678d7cbb5bfbac551903506b32f904f'
-            'f2fd9d8331238727333cf2412ba3759cb194a65b2060eff36808b24c06382104'
-            '497dbeefb9cd9792757a9b6e1fbfd92710d19990ee2959add6c30533ae40b6f6'
-            '45429013dae87a58bc79ca7b7a037665bf8592cae0199bcf4aef088fb950e78a')
 backup=('etc/bitcoin/bitcoin.conf'
         'etc/logrotate.d/bitcoin')
 provides=('bitcoin-cli' 'bitcoin-daemon' 'bitcoin-tx' 'bitcoin-qt' 'bitcoin-seeder')
diff --git a/contrib/aur/bitcoin-abc/PKGBUILD b/contrib/aur/bitcoin-abc/PKGBUILD
--- a/contrib/aur/bitcoin-abc/PKGBUILD
+++ b/contrib/aur/bitcoin-abc/PKGBUILD
@@ -7,7 +7,7 @@
 arch=('i686' 'x86_64')
 url="https://bitcoinabc.org"
 depends=('boost-libs' 'libevent' 'openssl' 'zeromq' 'miniupnpc' 'jemalloc')
-makedepends=('cmake' 'ninja' 'boost')
+makedepends=('cmake' 'ninja' 'boost' 'python')
 license=('MIT')
 source=(https://github.com/Bitcoin-ABC/bitcoin-abc/archive/v$pkgver.tar.gz
         bitcoin.conf
@@ -15,12 +15,6 @@
         bitcoin.service
         bitcoin-reindex.service
         bitcoin.install)
-sha256sums=('feaffb2129f49813692ec17ba5675a3ac44e6d0560af55bb4d1d2f160c5b4a0b'
-            'c30e5c7e0e97b001fdeac5f4510d5ebc0e0499ec086325e845db609a24f2e22f'
-            '8f05207b586916d489b7d25a68eaacf6e678d7cbb5bfbac551903506b32f904f'
-            'f2fd9d8331238727333cf2412ba3759cb194a65b2060eff36808b24c06382104'
-            '497dbeefb9cd9792757a9b6e1fbfd92710d19990ee2959add6c30533ae40b6f6'
-            '16ea5b19d554e0cb748ba14cbeee6015ed456b66f981fb8769f1403720b2d0a9')
 backup=('etc/bitcoin/bitcoin.conf'
         'etc/logrotate.d/bitcoin')
 provides=('bitcoin-cli' 'bitcoin-daemon' 'bitcoin-tx' 'bitcoin-seeder')
diff --git a/contrib/aur/update-aur.sh b/contrib/aur/update-aur.sh
new file mode 100644
--- /dev/null
+++ b/contrib/aur/update-aur.sh
@@ -0,0 +1,75 @@
+#!/usr/bin/env bash
+
+export LC_ALL=C
+
+set -euxo pipefail
+
+# The nobody user is a default on Archlinux. It has no login and no home
+# directory, its main use is for running unprivileged commands in scripts, which
+# is exactly what we need for running makepkg which can't run as root.
+run_as_nobody() {
+  su -l nobody -s /bin/bash -c "cd ${PWD} && $1"
+}
+
+PACKAGES=(
+  bitcoin-abc
+  bitcoin-abc-qt
+)
+
+for PACKAGE in "${PACKAGES[@]}"
+do
+  # Give write permission to the nobody user
+  # This is required as makepkg cannot be run as root
+  chmod -R o+w "${PACKAGE}"
+  pushd "${PACKAGE}"
+
+  # Get the data from the PKGBUILD
+  # shellcheck source=bitcoin-abc/PKGBUILD
+  source PKGBUILD
+
+  # Install the dependencies
+  pacman -S --needed --noconfirm "${depends[@]}" "${makedepends[@]}"
+
+  # Copy the common files
+  for f in "${source[@]}"
+  do
+    if [ -f "../common/$f" ]
+    then
+      cp "../common/$f" .
+    fi
+  done
+
+  # Add the checksums to the PKGBUILD. Enforce SHA256.
+  echo "sha256sums=()" >> PKGBUILD
+  run_as_nobody "updpkgsums PKGBUILD"
+
+  # Generate the .SRCINFO
+  run_as_nobody "makepkg --printsrcinfo > .SRCINFO"
+
+  popd
+
+  # Clone the upstream repository
+  git clone "https://aur.archlinux.org/${PACKAGE}.git" "${PACKAGE}-upstream"
+
+  # Copy our modified files to the upstream repository
+  cp -R "${PACKAGE}"/* "${PACKAGE}-upstream"
+
+  # Give write permission to the nobody user
+  # This is required as makepkg cannot be run as root
+  chmod -R o+w "${PACKAGE}-upstream"
+  pushd "${PACKAGE}-upstream"
+
+  # The package is ready, let's check it works
+  run_as_nobody "makepkg --clean"
+
+  # Cleanup the output files from the build
+  git clean -xffd
+
+  # Commit the version change
+  git commit -a -m "Update to version ${pkgver} release ${pkgrel}"
+
+  # Push the changes upstream
+  git push origin master
+
+  popd
+done