diff --git a/build_library/generate_au_zip.py b/build_library/generate_au_zip.py
index 61717eb73c..d943d73f05 100755
--- a/build_library/generate_au_zip.py
+++ b/build_library/generate_au_zip.py
@@ -19,6 +19,7 @@ import tempfile
 # GLOBALS
 STATIC_FILES = ['/usr/bin/old_bins/cgpt',
                 '/usr/bin/cros_generate_update_payload',
+                '~/trunk/.repo/manifests/version.txt',
                 '~/trunk/src/scripts/chromeos-common.sh',
                 '~/trunk/src/scripts/common.sh',
                 ]
diff --git a/common.sh b/common.sh
index a72e7a8451..010334b33b 100644
--- a/common.sh
+++ b/common.sh
@@ -305,7 +305,10 @@ BUILD_LIBRARY_DIR="${SCRIPTS_DIR}/build_library"
 
 # Source COREOS_* from manifest for version information.
 COREOS_VERSION_FILE="${GCLIENT_ROOT}/.repo/manifests/version.txt"
-source "$COREOS_VERSION_FILE" || die "Cannot source $COREOS_VERSION_FILE"
+if [[ ! -f "${COREOS_VERSION_FILE}" ]]; then
+    COREOS_VERSION_FILE="${SCRIPT_LOCATION}/version.txt"
+fi
+source "$COREOS_VERSION_FILE" || die "Cannot source version.txt"
 
 # Official builds must set COREOS_OFFICIAL=1 to use an official version.
 if [ ${COREOS_OFFICIAL:-0} -ne 1 ]; then