diff --git a/bin/git-extras b/bin/git-extras
index 33098fcfaabd..28fc2056718f 100755
--- a/bin/git-extras
+++ b/bin/git-extras
@@ -4,13 +4,12 @@ VERSION="7.1.0-dev"
 INSTALL_SCRIPT="https://raw.githubusercontent.com/tj/git-extras/master/install.sh"

 update() {
-  local bin="$(command -v git-extras)"
-  local prefix=${bin%/*/*}
-  local orig=$PWD
-
-  curl -s $INSTALL_SCRIPT | PREFIX="$prefix" bash /dev/stdin \
-    && cd "$orig" \
-    && echo "... updated git-extras $VERSION -> $(git extras --version)"
+  echo "This git-extras installation is managed by MacPorts."
+  echo "If you'd like to update git-extras, run the following:"
+  echo
+  echo "  sudo port upgrade git-extras"
+  echo
+  return 1
 }

 updateForWindows() {