diff --git a/.emacs.d/init.el b/.emacs.d/init.el
index 6f3b825..b988266 100644
--- a/.emacs.d/init.el
+++ b/.emacs.d/init.el
@@ -784,7 +784,12 @@
         pkgbuild-makepkg-command "PKGEXT='.pkg.tar' makepkg -mf")
   (defun pkgbuild-printsrcinfo ()
       (interactive)
-      (shell-command "makepkg --printsrcinfo > .SRCINFO")))
+      (shell-command "makepkg --printsrcinfo > .SRCINFO"))
+  (defun pkgbuild-update-sums-line ()
+    (interactive)
+    (shell-command "updpkgsums")
+    (pkgbuild-printsrcinfo)
+    (revert-buffer t t t)))
 
 (use-package qml-mode
   :mode "\\.qml\\'"