diff --git a/allocator-api2-fix-unsafe-autoref-lint-error.patch b/allocator-api2-fix-unsafe-autoref-lint-error.patch
deleted file mode 100644
index 0f8502de14556e5012b5f778fc0d9723c4b9d59f..0000000000000000000000000000000000000000
--- a/allocator-api2-fix-unsafe-autoref-lint-error.patch
+++ /dev/null
@@ -1,23 +0,0 @@
-From f95e3419ce41883904fcb2279b52aa35b5f04d76 Mon Sep 17 00:00:00 2001
-From: Davi Nakano <davinakanoca@gmail.com>
-Date: Thu, 4 Sep 2025 14:39:23 -0600
-Subject: [PATCH] fix implicit autoref creates a reference to the
- dereference of a raw pointer
-
----
- src/vec/mod.rs | 2 +-
- 1 file changed, 1 insertion(+), 1 deletion(-)
-
-diff --git a/third_party/rust/allocator-api2/src/stable/vec/mod.rs b/third_party/rust/allocator-api2/src/stable/vec/mod.rs
-index bcb61b2..55e5e07 100644
---- a/third_party/rust/allocator-api2/src/stable/vec/mod.rs	2025-09-21 11:55:52.911442500 +0800
-+++ b/third_party/rust/allocator-api2/src/stable/vec/mod.rs	2025-09-21 11:56:34.642381500 +0800
-@@ -1899,7 +1899,7 @@
-     #[cfg(not(no_global_oom_handling))]
-     #[inline(always)]
-     unsafe fn append_elements(&mut self, other: *const [T]) {
--        let count = unsafe { (*other).len() };
-+        let count = unsafe { (&(*other)).len() };
-         self.reserve(count);
-         let len = self.len();
-         unsafe { ptr::copy_nonoverlapping(other as *const T, self.as_mut_ptr().add(len), count) };
diff --git a/thunderbird-140.3.1esr.source.tar.xz b/thunderbird-140.4.0esr.source.tar.xz
similarity index 32%
rename from thunderbird-140.3.1esr.source.tar.xz
rename to thunderbird-140.4.0esr.source.tar.xz
index af4bd2954e0d850fc1ef4c887a0fe4dec6327fd0..fdd35728f8940f6262554c0d8dc8543c5468e751 100644
--- a/thunderbird-140.3.1esr.source.tar.xz
+++ b/thunderbird-140.4.0esr.source.tar.xz
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:5981260076790dae80c8190c2f4109e33843c70fd7d19ec64f1d3ec8a38ff2e6
-size 758697864
+oid sha256:b0eb946d9e6d4b2adbfad0893a5c79caa11203a3906b0b5f26f0ccc4c9b28ff0
+size 754630692
diff --git a/thunderbird-langpacks-140.3.1esr.tar.xz b/thunderbird-langpacks-140.4.0esr.tar.xz
similarity index 32%
rename from thunderbird-langpacks-140.3.1esr.tar.xz
rename to thunderbird-langpacks-140.4.0esr.tar.xz
index ebdcaada0561b56baed4ade8ed6b3139468c6d41..ec8a0770dee7605a0df9d15c47bcb3aae89634ec 100644
--- a/thunderbird-langpacks-140.3.1esr.tar.xz
+++ b/thunderbird-langpacks-140.4.0esr.tar.xz
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:91a61e7861b10f83dc173c1af3bc94ae3659ae86ed3aca884ab901e349b496b1
-size 26198500
+oid sha256:353c33b014de36c96c334d4bc87310bf4bf2132049e00ede1842df2f77b6c855
+size 26157948
diff --git a/thunderbird.spec b/thunderbird.spec
index 02794734b43699be6a88900ad70e7b50fa796326..2fe3a2c183d1994c95e9fe0438ea7c0506adb46e 100644
--- a/thunderbird.spec
+++ b/thunderbird.spec
@@ -59,7 +59,7 @@
 
 Summary:        Mozilla Thunderbird mail/newsgroup client
 Name:           thunderbird
-Version:        140.3.1
+Version:        140.4.0
 Release:        1
 URL:            https://www.mozilla.org/projects/thunderbird/
 License:        MPL-2.0 OR GPL-2.0-or-later OR LGPL-2.0-or-later
@@ -83,7 +83,6 @@ Source32:       node-stdout-nonblocking-wrapper
 
 # Build patches
 Patch0:         build-aarch64-skia.patch
-Patch1:         allocator-api2-fix-unsafe-autoref-lint-error.patch
 
 # gcc 12 build fix patches
 Patch422:       0001-GLIBCXX-fix-for-GCC-12.patch
@@ -214,7 +213,6 @@ debug %{name}, you want to install %{name}-debuginfo instead.
 
 # Build patches
 %patch -P 0   -p1 -b .build-aarch64-skia
-%patch -P 1   -p1 -b .fix-unsafe-autoref-lint-error
 
 %patch -P 402 -p1 -b .526293
 %patch -P 406 -p1 -b .1170092-etc-conf
@@ -564,6 +562,9 @@ gtk-update-icon-cache %{_datadir}/icons/hicolor &>/dev/null || :
 #===============================================================================
 
 %changelog
+* Wed Oct 15 2025 Funda Wang <fundawang@yeah.net> - 140.4.0-1
+- update to 140.4.0
+
 * Wed Oct 01 2025 Funda Wang <fundawang@yeah.net> - 140.3.1-1
 - update to 140.3.1