diff --git a/bin/manage.sh b/bin/manage.sh
index 9c36521..95e5eac 100755
--- a/bin/manage.sh
+++ b/bin/manage.sh
@@ -8,7 +8,7 @@ DIR="$(dirname -- "${BASH_SOURCE[0]}")"
 PROG="$(basename -- "${BASH_SOURCE[0]}")"
 source $DIR/../source.env
 
-BUILD_TIMESTAMP="`date`"
+export BUILD_TIMESTAMP="`date`"
 
 ## Functions ##