diff --git a/srcpkgs/python3-cysignals/patches/cython3-fix-warning.patch b/srcpkgs/python3-cysignals/patches/cython3-fix-warning.patch
new file mode 100644
index 00000000000..98cad9625e4
--- /dev/null
+++ b/srcpkgs/python3-cysignals/patches/cython3-fix-warning.patch
@@ -0,0 +1,13 @@
+diff --git a/src/cysignals/signals.pxd.in b/src/cysignals/signals.pxd.in
+index c86e085..a98c8d1 100644
+--- a/src/cysignals/signals.pxd.in
++++ b/src/cysignals/signals.pxd.in
+@@ -54,7 +54,7 @@ cdef extern from "macros.h" nogil:
+ # can be used to make Cython check whether there is a pending exception
+ # (PyErr_Occurred() is non-NULL). To Cython, it will look like
+ # cython_check_exception() actually raised the exception.
+-cdef inline void cython_check_exception() nogil except *:
++cdef inline void cython_check_exception() except * nogil:
+     pass
+ 
+ 
diff --git a/srcpkgs/python3-cysignals/patches/cython3-legacy.patch b/srcpkgs/python3-cysignals/patches/cython3-legacy.patch
new file mode 100644
index 00000000000..274575d5d35
--- /dev/null
+++ b/srcpkgs/python3-cysignals/patches/cython3-legacy.patch
@@ -0,0 +1,30 @@
+commit 9996a4028ddc7f9a5ffda3df65d5b7d3b7df8aa5
+Author: Gonzalo Tornaría <tornaria@cmat.edu.uy>
+Date:   Wed Jul 19 18:34:57 2023 -0300
+
+    cython3 support using legacy directives
+
+diff --git a/setup.py b/setup.py
+index 37acdfc..f68270b 100755
+--- a/setup.py
++++ b/setup.py
+@@ -157,13 +157,17 @@ class build_ext(_build_ext):
+         # Run Cython with -Werror on continuous integration services
+         # with Python 3.6 or later
+         from Cython.Compiler import Options
+-        Options.warning_errors = True
++        Options.warning_errors = False
+ 
+         from Cython.Build.Dependencies import cythonize
+         return cythonize(extensions,
+                 build_dir=cythonize_dir,
+                 include_path=["src", os.path.join(cythonize_dir, "src")],
+-                compiler_directives=dict(binding=True, language_level=2))
++                compiler_directives=dict(
++                    binding=True,
++                    language_level=2,
++                    legacy_implicit_noexcept=True,
++                    ))
+ 
+ 
+ class build_py(_build_py):
diff --git a/srcpkgs/python3-cysignals/template b/srcpkgs/python3-cysignals/template
index bd9563353ba..739cbc91a96 100644
--- a/srcpkgs/python3-cysignals/template
+++ b/srcpkgs/python3-cysignals/template
@@ -1,7 +1,7 @@
 # Template file for 'python3-cysignals'
 pkgname=python3-cysignals
 version=1.11.2
-revision=4
+revision=5
 build_style=python3-module
 hostmakedepends="python3-setuptools python3-Cython autoconf"
 makedepends="python3-devel pari-devel"