diff --git a/gblocks/lilac.py b/gblocks/lilac.py
index 4802205f46..fcbff72939 100755
--- a/gblocks/lilac.py
+++ b/gblocks/lilac.py
@@ -3,3 +3,8 @@ from lilaclib import *
 
 def pre_build():
     update_pkgver_and_pkgrel(_G.newver.lstrip('v'))
+    run_cmd(['updpkgsums'])
+
+def post_build():
+    git_add_files('PKGBUILD')
+    git_commit()