diff -pruN 12.1-1~exp1/debian/changelog 12.1-1/debian/changelog
--- 12.1-1~exp1/debian/changelog	2025-08-10 19:34:24.000000000 +0000
+++ 12.1-1/debian/changelog	2025-09-21 10:36:34.000000000 +0000
@@ -1,3 +1,9 @@
+folder-account (12.1-1) unstable; urgency=medium
+
+  * Rebuild for unstable to use thunderbird >= 140.3
+
+ -- Mechtilde Stehmann <mechtilde@debian.org>  Sun, 21 Sep 2025 12:36:34 +0200
+
 folder-account (12.1-1~exp1) experimental; urgency=medium
 
   [ Mechtilde ]
diff -pruN 12.1-1~exp1/debian/dpb.conf 12.1-1/debian/dpb.conf
--- 12.1-1~exp1/debian/dpb.conf	2025-08-10 18:45:42.000000000 +0000
+++ 12.1-1/debian/dpb.conf	2025-09-21 10:15:34.000000000 +0000
@@ -13,3 +13,4 @@ JavaFlag=0
 WebextFlag=1
 ## Parameters for Python3 packages
 PythonFlag=0
+RecentBranchD=unstable