diff --git a/yay/autobuild.yaml b/yay/autobuild.yaml
index f9e1b29..0a22a4f 100644
--- a/yay/autobuild.yaml
+++ b/yay/autobuild.yaml
@@ -2,3 +2,6 @@ type:
     auto
 priority:
     10
+extra:
+    - update:
+        - bash buildbot.update.d/update.sh
diff --git a/yay/buildbot.update.d/update.sh b/yay/buildbot.update.d/update.sh
new file mode 100755
index 0000000..4020b46
--- /dev/null
+++ b/yay/buildbot.update.d/update.sh
@@ -0,0 +1,93 @@
+#!/bin/bash
+# buildbot update hook for aur packages
+set -e -o pipefail
+
+assertPkgname() {
+    if [[ "$(basename $(pwd))" != "$PKGNAME" ]]; then
+        echo "Please run this script inside the $PKGNAME dir."
+        exit 1
+    fi
+}
+
+## This section does essential preparations
+PKGNAME='yay' && assertPkgname
+PKGBUILD='PKGBUILD'
+UPDATE_DIR='buildbot.update.d'
+git pull --ff-only
+git checkout $PKGBUILD
+VER=$(source $PKGBUILD; printf "%s-%s" "$pkgver" "$pkgrel")
+
+# apply patches to the upstream aur package
+PATCHES=(
+)
+
+# prepare upstream source
+prepare() {
+    # sed -i "s/^arch=.*$/arch=('aarch64')/g" PKGBUILD
+}
+
+# which files to include, overrides exclude_files below
+INCLUDE_FILES=(
+#    'PKGBUILD'
+#    '.gitignore'
+)
+
+# which files to exclude, use '*' and '.*' to exclude all
+EXCLUDE_FILES=(
+    '.SRCINFO'
+    '.git'
+)
+
+# This section does actual jobs
+newPkgVer() {
+    # do not print anything to stdout other than new pkgver here
+
+    ver=$(curl -s "https://aur.archlinux.org/rpc/?v=5&type=info&arg[]=${PKGNAME}"| \
+          python3 -c 'import json; j=json.loads(input()); print(j.get("results", [dict()])[0].get("Version", 0))')
+    if [[ "$ver" == "$VER" ]]; then
+        echo "${PKGNAME} is up to date with aur." >&2
+    else
+        echo "${PKGNAME} has new ver form aur: ${ver}" >&2
+        echo "$ver"
+    fi
+}
+
+newpkgver=$(newPkgVer)
+[ -z "$newpkgver" ] && exit 0
+
+incfiles=''
+for f in "${INCLUDE_FILES[@]}"; do
+    incfiles="$incfiles"$'\n'"$f"
+done
+
+excfiles='{'
+for f in "${EXCLUDE_FILES[@]}"; do
+    excfiles="${excfiles}${f},"
+done
+excfiles="${excfiles}}"
+[[ "$excfiles" == '{}' ]] && excfiles=''
+
+pushd "$UPDATE_DIR" >/dev/null
+rm -rf "$PKGNAME"
+git clone --depth 1 "https://aur.archlinux.org/${PKGNAME}.git" "$PKGNAME"
+
+cd "$PKGNAME" && prepare
+for patch in "${PATCHES[@]}"; do
+    git apply "../${patch}"
+done
+
+add_files=$(eval ls -1 --almost-all --ignore=${excfiles})
+add_files="${add_files}"$'\n'"${incfiles}"
+
+while read f; do
+    [[ -z "$f" ]] && continue
+    cp -av "$f" ../../
+    (cd ../../ && git add "$f")
+done <<< "$add_files"
+
+cd ..
+rm -rf "$PKGNAME"
+popd >/dev/null
+
+git commit -m "autoupdate: ${PKGNAME} to ${newpkgver} from aur"
+git push