diff --git a/qsign/APKBUILD b/qsign/APKBUILD
index 4e60289..3986c22 100644
--- a/qsign/APKBUILD
+++ b/qsign/APKBUILD
@@ -1,12 +1,13 @@
 # Contributor: psykose <alice@ayaya.dev>
 # Maintainer: psykose <alice@ayaya.dev>
 pkgname=qsign
-pkgver=6
+pkgver=7
 pkgrel=0
 pkgdesc="quicksign local apk repos"
 url="https://git.ddd.rip/ptrcnull/ptrcports"
 arch="noarch"
 license="ISC"
+depends="abuild apk-tools s6"
 source="qsign qsign.conf"
 options="!check" # ???????????????????????????????????????????
 
@@ -16,6 +17,6 @@ package() {
 }
 
 sha512sums="
-58f84526ed3496f77c2a5ee585d40a9a15efa76c6c8efff8c8cdc42d3f4f310520f12d419aa2d9dca382d6aebaee49780abc65a0ab8084e4de870d2b36c92758  qsign
+57fc14f7697e06f9121923af6182a2acc976de30016661d3399c3bad46c1df01398c8287b6abeb40659b48f3c253cee726892c2677e08b616f00c8094550d400  qsign
 c6791d0a4d74acfa81b74f4129b31e008fd409be0e2dad4fb2c04187385666a47d475d4795fe20dbc5afcc5b4e2a35462bd43fb5fac006e03bafad93de4f65bc  qsign.conf
 "
diff --git a/qsign/qsign b/qsign/qsign
index 75766f0..32ae256 100755
--- a/qsign/qsign
+++ b/qsign/qsign
@@ -9,6 +9,8 @@ arch="$(apk --print-arch)"
 
 for repo in $repos; do
     cd "$REPODEST/$repo/$arch" || continue
-    apk index --no-warnings --rewrite-arch=$arch ./*.apk -o APKINDEX.tar.gz -x APKINDEX.tar.gz
-    abuild-sign APKINDEX.tar.gz
+    s6-setlock /dev/shm/qsign-lock-$repo sh -c '
+        apk index --no-warnings --rewrite-arch=$arch ./*.apk -o APKINDEX.tar.gz -x APKINDEX.tar.gz
+        abuild-sign APKINDEX.tar.gz
+    '
 done