diff --git a/revbank b/revbank
index c0a4ea1..5e9f584 100755
--- a/revbank
+++ b/revbank
@@ -123,6 +123,11 @@ sub now {
     return strftime '%Y-%m-%d_%H:%M:%S', localtime;
 }
 
+sub git_commit {
+    system qw(git commit -q revbank.accounts .revbank.undo),
+        -m => "Transaction by $user";
+}
+
 sub parse_product {
     my ($id) = @_;
     my @products;
@@ -380,6 +385,7 @@ sub undo {
     } else {
         print "Transaction ID '$tid' not found in undo log.\n";
     }
+    git_commit();
     return ['noop'];
 }
 
@@ -520,6 +526,7 @@ LINE: for (;;) {
         my ($old, $new) = update_account($_, $delta);
     }
     close $ufh;
+    git_commit();
 
     my $deposit = sum map $_->[1], grep { $_->[0] eq 'deposit' } @todo;
     if ($deposit) {
diff --git a/revbank.products b/revbank.products
index f024165..40492a2 100644
--- a/revbank.products
+++ b/revbank.products
@@ -1,4 +1,5 @@
-649241869825    0.00    Free disgusting stuff
+# Free stuff
+649241869825    0.00    Free disgusting stuff (LS)
 
 # Water
 5400151013112   0.50    Carbonated mineral water