diff --git a/spcd/main.sh b/spcd/main.sh
index 2d486e2..51f3814 100644
--- a/spcd/main.sh
+++ b/spcd/main.sh
@@ -9,7 +9,24 @@
 [ -n "${SPCD_REF_FEATURE}" ] || SPCD_REF_FEATURE="f"
 [ -n "${SPCD_REF_RELEASE}" ] || SPCD_REF_RELEASE="main"
 [ -n "${SPCD_REF_STAGING}" ] || SPCD_REF_STAGING="dev"
-[ -n "${SPCD_URL_PYTHON}" ] || SPCD_URL_PYTHON="https://pypi.org/simple"
+[ -n "${SPCD_URL_ALPINE}" ] ||
+    SPCD_URL_ALPINE="https://dl-cdn.alpinelinux.org"
+[ -n "${SPCD_URL_ARCH}" ] ||
+    SPCD_URL_ARCH="https://geo.mirror.pkgbuild.com"
+[ -n "${SPCD_URL_DEBIAN}" ] ||
+    SPCD_URL_DEBIAN="https://deb.debian.org"
+[ -n "${SPCD_URL_EPEL}" ] ||
+    SPCD_URL_EPEL="https://dl.fedoraproject.org"
+[ -n "${SPCD_URL_FEDORA}" ] ||
+    SPCD_URL_FEDORA="https://rpmfind.net"
+[ -n "${SPCD_URL_OPENSUSE}" ] ||
+    SPCD_URL_OPENSUSE="https://download.opensuse.org"
+[ -n "${SPCD_URL_PYTHON}" ] ||
+    SPCD_URL_PYTHON="https://pypi.org/simple"
+[ -n "${SPCD_URL_ROCKY}" ] ||
+    SPCD_URL_ROCKY="https://dl.rockylinux.org"
+[ -n "${SPCD_URL_UBUNTU}" ] ||
+    SPCD_URL_UBUNTU="https://ubuntu.mirrors.ovh.net"
 
 # main
 spcd_main() {