diff --git a/build_packages b/build_packages
index c77f0c8dbd..1ad8800f48 100755
--- a/build_packages
+++ b/build_packages
@@ -40,6 +40,8 @@ DEFINE_string torcx_output_root "${DEFAULT_BUILD_ROOT}/torcx" \
   "Directory in which to place torcx stores and manifests (named by board/version)"
 DEFINE_boolean skip_torcx_store "${FLAGS_FALSE}" \
   "Don't build a new torcx store from the updated sysroot."
+DEFINE_string torcx_extra_pkg_url "" \
+  "URL to directory where the torcx packages will be available for downloading"
 
 # include upload options
 . "${BUILD_LIBRARY_DIR}/release_util.sh" || exit 1
@@ -303,7 +305,10 @@ upload_packages
 
 # Build a new torcx store with the updated packages, passing flags through.
 if [ "${FLAGS_skip_torcx_store}" -eq "${FLAGS_FALSE}" ]; then
-  "${SCRIPTS_DIR}"/build_torcx_store --board="${BOARD}" --output_root="${FLAGS_torcx_output_root}"
+  "${SCRIPTS_DIR}"/build_torcx_store \
+                  --board="${BOARD}" \
+                  --output_root="${FLAGS_torcx_output_root}" \
+                  --extra_pkg_url="${FLAGS_torcx_extra_pkg_url}"
 fi
 
 info "Builds complete"
diff --git a/build_torcx_store b/build_torcx_store
index c4b0f99ff9..6bc95b1ba2 100755
--- a/build_torcx_store
+++ b/build_torcx_store
@@ -16,6 +16,8 @@ DEFINE_string board "${DEFAULT_BOARD}" \
   "The board to build packages for."
 DEFINE_string output_root "${DEFAULT_BUILD_ROOT}/torcx" \
   "Directory in which to place torcx stores and manifests (named by board/version)"
+DEFINE_string extra_pkg_url "" \
+  "URL to directory where the torcx packages will be available for downloading"
 
 # include upload options
 . "${BUILD_LIBRARY_DIR}/release_util.sh" || exit 1
@@ -102,6 +104,7 @@ function torcx_package() {
         local version=${pkg:${#name}+1}
         local manifest_path="${2}"
         local type="${3}"
+        local extra_pkg_url="${4}"
         local deppkg digest file rpath sha512sum source_pkg rdepends tmproot tmppkgroot update_default tmpfile
         local pkg_cas_file pkg_cas_root
         local pkg_locations=()
@@ -215,6 +218,9 @@ function torcx_package() {
         if [[ "${FLAGS_upload}" -eq ${FLAGS_TRUE} ]]; then
                 pkg_locations+=("$(download_tectonic_torcx_url "pkgs/${BOARD}/${name}/${digest}/${name}:${version}.torcx.tgz")")
         fi
+        if [[ -n "${extra_pkg_url}" ]]; then
+            pkg_locations+=("${extra_pkg_url}/${name}:${version}.torcx.tgz")
+        fi
         torcx_manifest::add_pkg "${manifest_path}" \
             "${name}" \
             "${version}" \
@@ -243,8 +249,12 @@ EXTRA_IMAGES=(
 mkdir -p "${BUILD_DIR}"
 manifest_path="${BUILD_DIR}/torcx_manifest.json"
 torcx_manifest::create_empty "${manifest_path}"
-for pkg in "${@:-${DEFAULT_IMAGES[@]}}" ; do torcx_package "${pkg#=}" "${manifest_path}" "default" ; done
-for pkg in "${EXTRA_IMAGES[@]}" ; do torcx_package "${pkg#=}" "${manifest_path}" "extra" ; done
+for pkg in "${@:-${DEFAULT_IMAGES[@]}}"; do
+        torcx_package "${pkg#=}" "${manifest_path}" "default" "${FLAGS_extra_pkg_url}"
+done
+for pkg in "${EXTRA_IMAGES[@]}"; do
+        torcx_package "${pkg#=}" "${manifest_path}" "extra" "${FLAGS_extra_pkg_url}"
+done
 
 set_build_symlinks latest "${FLAGS_group}-latest"
 
diff --git a/ci-automation/packages.sh b/ci-automation/packages.sh
index 029b1f4c56..dcddb0dcbf 100644
--- a/ci-automation/packages.sh
+++ b/ci-automation/packages.sh
@@ -80,6 +80,18 @@ function _packages_build_impl() {
     local vernum="${FLATCAR_VERSION}"
     local docker_vernum="$(vernum_to_docker_image_version "${vernum}")"
     local packages_container="flatcar-packages-${arch}-${docker_vernum}"
+    local torcx_pkg_url="https://${BUILDCACHE_SERVER}/images/${arch}/${vernum}/torcx"
+
+    source sdk_lib/sdk_container_common.sh
+
+    if is_official "${vernum}"; then
+        # A channel returned by get_git_channel should not ever be
+        # "developer" here, because it's an official build done from
+        # one of the maintenance branches. So if the channel happens
+        # to be "developer", then you are doing it wrong (releasing
+        # from the main branch?).
+        torcx_pkg_url="https://$(get_git_channel).release.flatcar-linux.net/${arch}-usr/${vernum}/torcx"
+    fi
 
     # Build packages; store packages and torcx output in container
     ./run_sdk_container -x ./ci-cleanup.sh -n "${packages_container}" -v "${vernum}" \
@@ -88,7 +100,8 @@ function _packages_build_impl() {
     ./run_sdk_container -n "${packages_container}" -v "${vernum}" \
         -C "${sdk_image}" \
         ./build_packages --board="${arch}-usr" \
-            --torcx_output_root="${CONTAINER_TORCX_ROOT}"
+            --torcx_output_root="${CONTAINER_TORCX_ROOT}" \
+            --torcx_extra_pkg_url="${torcx_pkg_url}"
 
     # copy torcx manifest and docker tarball for publishing
     local torcx_tmp="__build__/torcx_tmp"