diff --git a/build.sh b/build.sh
index 01e0fc4..84698a6 100755
--- a/build.sh
+++ b/build.sh
@@ -13,7 +13,7 @@ function puts-step (){
 
 
 # Argument parsing.
-while getopts ":f:x:p:" opt; do
+while getopts ":f:x:p:r:" opt; do
   case $opt in
     f)
       FORMULA=$OPTARG
@@ -28,6 +28,10 @@ while getopts ":f:x:p:" opt; do
       ARCHIVE=$OPTARG
       echo "Using archive: $OPTARG" >&2
       ;;
+    r)
+      S3_BUCKET=$OPTARG
+      echo "Using s3 bucket: $OPTARG" >&2
+      ;;
     \?)
       echo "Invalid option: -$OPTARG" >&2
       exit 1
@@ -62,4 +66,9 @@ $(pwd)/formula/$FORMULA $PREFIX_PATH | indent
 
 if [ "$ARCHIVE" ]; then
     tar cjf $ARCHIVE $PREFIX_PATH
-fi
\ No newline at end of file
+fi
+
+if [ "$S3_BUCKET" ]; then
+    s3put -b $S3_BUCKET $ARCHIVE
+fi
+