diff --git a/breezy/0004-remove-PyInt_AsUnsignedLongMask.patch b/breezy/0004-remove-PyInt_AsUnsignedLongMask.patch
new file mode 100644
index 00000000..fbfd8651
--- /dev/null
+++ b/breezy/0004-remove-PyInt_AsUnsignedLongMask.patch
@@ -0,0 +1,71 @@
+diff -Nur breezy-brz-3.2.2.orig/breezy/bzr/_chk_map_pyx.pyx breezy-brz-3.2.2/breezy/bzr/_chk_map_pyx.pyx
+--- breezy-brz-3.2.2.orig/breezy/bzr/_chk_map_pyx.pyx	2022-03-20 02:51:38.000000000 +0100
++++ breezy-brz-3.2.2/breezy/bzr/_chk_map_pyx.pyx	2025-05-11 09:57:40.526320800 +0200
+@@ -40,8 +40,8 @@
+ from cpython.dict cimport (
+     PyDict_SetItem,
+     )
+-from cpython.int cimport (
+-    PyInt_AsUnsignedLongMask,
++from cpython.long cimport (
++    PyLong_AsUnsignedLongMask,
+     )
+ from cpython.object cimport (
+     PyObject,
+@@ -102,7 +102,7 @@
+         if i > 0:
+             c_out[0] = c'\x00'
+             c_out = c_out + 1
+-        crc_val = PyInt_AsUnsignedLongMask(crc32(key[i])) & 0xFFFFFFFFUL
++        crc_val = PyLong_AsUnsignedLongMask(crc32(key[i])) & 0xFFFFFFFFUL
+         # Hex(val) order
+         sprintf(c_out, '%08lX', crc_val)
+         c_out = c_out + 8
+@@ -127,7 +127,7 @@
+         if i > 0:
+             c_out[0] = c'\x00'
+             c_out = c_out + 1
+-        crc_val = PyInt_AsUnsignedLongMask(crc32(key[i]))
++        crc_val = PyLong_AsUnsignedLongMask(crc32(key[i]))
+         # MSB order
+         c_out[0] = (crc_val >> 24) & 0xFF
+         c_out[1] = (crc_val >> 16) & 0xFF
+diff -Nur breezy-brz-3.2.2.orig/breezy/bzr/_dirstate_helpers_pyx.pyx breezy-brz-3.2.2/breezy/bzr/_dirstate_helpers_pyx.pyx
+--- breezy-brz-3.2.2.orig/breezy/bzr/_dirstate_helpers_pyx.pyx	2022-03-20 02:51:38.000000000 +0100
++++ breezy-brz-3.2.2/breezy/bzr/_dirstate_helpers_pyx.pyx	2025-05-11 09:57:33.137587800 +0200
+@@ -98,7 +98,7 @@
+     object PyTuple_GetItem_void_object "PyTuple_GET_ITEM" (void* tpl, int index)
+     object PyTuple_GET_ITEM(object tpl, Py_ssize_t index)
+ 
+-    unsigned long PyInt_AsUnsignedLongMask(object number) except? -1
++    unsigned long PyLong_AsUnsignedLongMask(object number) except? -1
+ 
+     char *PyBytes_AsString(object p)
+     char *PyBytes_AsString_obj "PyBytes_AsString" (PyObject *string)
+@@ -800,7 +800,7 @@
+ cdef unsigned long _time_to_unsigned(object t):  # cannot_raise
+     if PyFloat_Check(t):
+         t = t.__int__()
+-    return PyInt_AsUnsignedLongMask(t)
++    return PyLong_AsUnsignedLongMask(t)
+ 
+ 
+ cdef _pack_stat(stat_value):
+@@ -812,13 +812,13 @@
+     cdef char result[6*4] # 6 long ints
+     cdef int *aliased
+     aliased = <int *>result
+-    aliased[0] = htonl(PyInt_AsUnsignedLongMask(stat_value.st_size))
++    aliased[0] = htonl(PyLong_AsUnsignedLongMask(stat_value.st_size))
+     # mtime and ctime will often be floats but get converted to PyInt within
+     aliased[1] = htonl(_time_to_unsigned(stat_value.st_mtime))
+     aliased[2] = htonl(_time_to_unsigned(stat_value.st_ctime))
+-    aliased[3] = htonl(PyInt_AsUnsignedLongMask(stat_value.st_dev))
+-    aliased[4] = htonl(PyInt_AsUnsignedLongMask(stat_value.st_ino))
+-    aliased[5] = htonl(PyInt_AsUnsignedLongMask(stat_value.st_mode))
++    aliased[3] = htonl(PyLong_AsUnsignedLongMask(stat_value.st_dev))
++    aliased[4] = htonl(PyLong_AsUnsignedLongMask(stat_value.st_ino))
++    aliased[5] = htonl(PyLong_AsUnsignedLongMask(stat_value.st_mode))
+     packed = PyBytes_FromStringAndSize(result, 6*4)
+     return _encode(packed)[:-1]
+ 
diff --git a/breezy/PKGBUILD b/breezy/PKGBUILD
index 522d5da9..42b0481f 100644
--- a/breezy/PKGBUILD
+++ b/breezy/PKGBUILD
@@ -2,7 +2,7 @@
 
 pkgname=breezy
 pkgver=3.2.2
-pkgrel=8
+pkgrel=9
 pkgdesc='A decentralized revision control system with support for Bazaar and Git file formats'
 arch=('i686' 'x86_64')
 url='https://www.breezy-vcs.org/'
@@ -30,16 +30,20 @@ conflicts=(bzr)
 replaces=(bzr)
 source=(${pkgname}-${pkgver}.tar.gz::https://github.com/breezy-team/breezy/archive/brz-${pkgver}.tar.gz
         '0002-add-msys2-certs-location.patch'
-        '0003-remove-unused-broken-import.patch')
+        '0003-remove-unused-broken-import.patch'
+        '0004-remove-PyInt_AsUnsignedLongMask.patch')
 sha256sums=('5661f2e2348a60db4af9c4c8f417a3da3f0bbc02f7a41ce988baba5e1100f3f1'
             '8f3a1c151c9ceb8b2ace12dc1c80bd123810e2e77a2c784385d5ad039f0bd3bb'
-            'a8b9707a9077b3c29e65ee5f89741dc2db92837d10a3041aca3d28032bfe7482')
+            'a8b9707a9077b3c29e65ee5f89741dc2db92837d10a3041aca3d28032bfe7482'
+            'cd0062e8e6eece87af16c847ff85a919d349bb24b1110e8ff629284171774b19')
 
 prepare(){
   cd "${srcdir}/${pkgname}-brz-${pkgver}"
 
   patch -p1 -i ${srcdir}/0002-add-msys2-certs-location.patch
   patch -p1 -i ${srcdir}/0003-remove-unused-broken-import.patch
+  # cython 3.1 compatibility
+  patch -p1 -i ${srcdir}/0004-remove-PyInt_AsUnsignedLongMask.patch
 }
 
 build() {