diff --git a/migrate2rocky/migrate2rocky.sh b/migrate2rocky/migrate2rocky.sh
index cdf3616..d68e5c0 100644
--- a/migrate2rocky/migrate2rocky.sh
+++ b/migrate2rocky/migrate2rocky.sh
@@ -114,7 +114,11 @@ SUPPORTED_MAJOR="8"
 SUPPORTED_PLATFORM="platform:el$SUPPORTED_MAJOR"
 ARCH=$(arch)
 
-gpg_key_url="https://dl.rockylinux.org/pub/rocky/RPM-GPG-KEY-rockyofficial"
+# Use Mirror URLs of Rocky Linux from environment if set.
+ROCKY_LINUX_DEFAULT_URL="https://dl.rockylinux.org/pub/rocky"
+ROCKY_LINUX_MIRROR_URL="${ROCKY_LINUX_ENV_MIRROR_URL:-"${ROCKY_LINUX_DEFAULT_URL}"}"
+
+gpg_key_url="${ROCKY_LINUX_MIRROR_URL}/RPM-GPG-KEY-rockyofficial"
 gpg_key_sha512="88fe66cf0a68648c2371120d56eb509835266d9efdf7c8b9ac8fc101bdf1f0e0197030d3ea65f4b5be89dc9d1ef08581adb068815c88d7b1dc40aa1c32990f6a"
 
 sm_ca_dir=/etc/rhsm/ca
@@ -123,8 +127,8 @@ unset tmp_sm_ca_dir
 # all repos must be signed with the same key given in $gpg_key_url
 declare -A repo_urls
 repo_urls=(
-    [rockybaseos]="https://dl.rockylinux.org/pub/rocky/${SUPPORTED_MAJOR}/BaseOS/$ARCH/os/"
-    [rockyappstream]="https://dl.rockylinux.org/pub/rocky/${SUPPORTED_MAJOR}/AppStream/$ARCH/os/"
+    [rockybaseos]="${ROCKY_LINUX_MIRROR_URL}/${SUPPORTED_MAJOR}/BaseOS/$ARCH/os/"
+    [rockyappstream]="${ROCKY_LINUX_MIRROR_URL}/${SUPPORTED_MAJOR}/AppStream/$ARCH/os/"
 )
 
 # The repos package for CentOS stream requires special handling.
@@ -845,6 +849,14 @@ EOF
         done
     fi
 
+    # Replace mirror
+    if [ -n "$ROCKY_LINUX_ENV_MIRROR_URL" ]; then
+        sed -e 's|^mirrorlist=|#mirrorlist=|g' \
+            -e 's|^#baseurl=http://dl.rockylinux.org/$contentdir|baseurl='${ROCKY_LINUX_MIRROR_URL}'|g' \
+            -i.bak \
+            /etc/yum.repos.d/Rocky-*.repo
+    fi
+
     # Distrosync
     infomsg $'Ensuring repos are enabled before the package swap\n'
     safednf -y --enableplugin=config-manager config-manager \