diff --git a/extras/quickstart.sh b/extras/quickstart.sh
index 60122e8..dc4da2b 100755
--- a/extras/quickstart.sh
+++ b/extras/quickstart.sh
@@ -159,7 +159,7 @@ install_pkgs() {
   if [ "$os_type" = "alpine" ]; then
     (
       set -x
-      apk add -U -q bash net-tools wget sed grep
+      apk add -U -q bash coreutils grep net-tools sed wget
     ) || exiterr "'apk add' failed."
   fi
 }
diff --git a/extras/vpnupgrade.sh b/extras/vpnupgrade.sh
index eb8836d..1e12a54 100755
--- a/extras/vpnupgrade.sh
+++ b/extras/vpnupgrade.sh
@@ -154,7 +154,7 @@ install_pkgs() {
   if [ "$os_type" = "alpine" ]; then
     (
       set -x
-      apk add -U -q bash wget sed grep
+      apk add -U -q bash coreutils grep sed wget
     ) || exiterr "'apk add' failed."
   fi
 }
diff --git a/vpnsetup.sh b/vpnsetup.sh
index 7dc9b6e..0581295 100755
--- a/vpnsetup.sh
+++ b/vpnsetup.sh
@@ -212,7 +212,7 @@ install_pkgs() {
   if [ "$os_type" = "alpine" ]; then
     (
       set -x
-      apk add -U -q bash net-tools wget sed grep
+      apk add -U -q bash coreutils grep net-tools sed wget
     ) || exiterr "'apk add' failed."
   fi
 }