diff --git a/helpers/default b/helpers/default
index f8a4954..1a20186 100644
--- a/helpers/default
+++ b/helpers/default
@@ -136,7 +136,7 @@ package_update () {
   elif [ "$PACKAGE_MANAGER" == 'yum' ]; then
     yum check-update -y
   elif [ "$PACKAGE_MANAGER" == 'port' ]; then
-    port self-update
+    port selfupdate
   elif [ "$PACKAGE_MANAGER" == 'brew' ]; then
     brew update
   else
@@ -358,4 +358,4 @@ function set_installed () {
 
   mkdir -p ~/.shoestrap/installed
   touch ~/.shoestrap/installed/$name
-}
\ No newline at end of file
+}