diff --git a/APKBUILD b/APKBUILD
index a946eeb..6948fe3 100644
--- a/APKBUILD
+++ b/APKBUILD
@@ -17,6 +17,8 @@ prepare() {
     tar -xf "$pkgname-$pkgver.tar.gz" -C "$pkgname-$pkgver"
     cd "$pkgname-$pkgver"
     sudo adduser -S -D -h /var/lib/semaphore semaphore
+    sudo addgroup -S semaphore
+    sudo addgroup semaphore semaphore
 }
 
 package() {