diff --git a/build_docker_aci b/build_docker_aci
index cdd12dd61a..2916d4d3f6 100755
--- a/build_docker_aci
+++ b/build_docker_aci
@@ -54,6 +54,8 @@ DEFINE_string version "" \
   "Sets the docker version to build."
 DEFINE_integer aci_version "" \
   "Sets the aci version tag identifier."
+DEFINE_integer jobs "${NUM_JOBS}" \
+  "How many packages to build in parallel at maximum."
 
 # Parse command line.
 FLAGS "$@" || exit 1
diff --git a/build_library/vm_image_util.sh b/build_library/vm_image_util.sh
index 67c9b785e3..acc884de60 100644
--- a/build_library/vm_image_util.sh
+++ b/build_library/vm_image_util.sh
@@ -522,6 +522,7 @@ install_oem_aci() {
     "${SCRIPT_ROOT}/build_oem_aci" \
         --board="${BOARD}" \
         --build_dir="${aci_dir}" \
+        --jobs="${FLAGS_jobs}" \
         "${binpkgflags[@]}" \
         "${oem_aci}"
 
diff --git a/build_oem_aci b/build_oem_aci
index d2fbe19a46..6e4858b680 100755
--- a/build_oem_aci
+++ b/build_oem_aci
@@ -46,6 +46,8 @@ DEFINE_string output_root "${DEFAULT_BUILD_ROOT}/images" \
   "Directory in which to place image result directories (named by version)"
 DEFINE_string version "" \
   "Overrides version number in name to this version."
+DEFINE_integer jobs "${NUM_JOBS}" \
+  "How many packages to build in parallel at maximum."
 
 # Parse command line.
 FLAGS "$@" || exit 1