diff --git a/Cython-0.29.22.tar.gz b/Cython-0.29.22.tar.gz
deleted file mode 100644
index 11eef3c..0000000
--- a/Cython-0.29.22.tar.gz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:df6b83c7a6d1d967ea89a2903e4a931377634a297459652e4551734c48195406
-size 2072112
diff --git a/Cython-0.29.23.tar.gz b/Cython-0.29.23.tar.gz
new file mode 100644
index 0000000..85e516e
--- /dev/null
+++ b/Cython-0.29.23.tar.gz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:6a0d31452f0245daacb14c979c77e093eb1a546c760816b5eed0047686baad8e
+size 2073944
diff --git a/python-Cython.changes b/python-Cython.changes
index fa1fcc1..f0a7ed3 100644
--- a/python-Cython.changes
+++ b/python-Cython.changes
@@ -1,3 +1,17 @@
+-------------------------------------------------------------------
+Wed Apr 21 21:19:17 UTC 2021 - Dirk Müller <dmueller@suse.com>
+
+- update to 0.29.23:
+  * Some problems with Python 3.10 were resolved.
+    Patches by Victor Stinner and David Woods.  (Github issues #4046, #4100)
+  * An incorrect "optimisation" was removed that allowed changes to a keyword
+    dict to leak into keyword arguments passed into a function.
+    Patch by Peng Weikang.  (Github issue #3227)
+  * Multiplied str constants could end up as bytes constants with language_level=2.
+    Patch by Alphadelta14 and David Woods.  (Github issue #3951)
+  * ``PY_SSIZE_T_CLEAN`` does not get defined any more if it is already defined.
+    Patch by Andrew Jones.  (Github issue #4104)
+
 -------------------------------------------------------------------
 Tue Feb 23 07:22:13 UTC 2021 - Paolo Stivanin <info@paolostivanin.com>
 
diff --git a/python-Cython.spec b/python-Cython.spec
index 7e3563a..795e22e 100644
--- a/python-Cython.spec
+++ b/python-Cython.spec
@@ -19,7 +19,7 @@
 %{?!python_module:%define python_module() python-%{**} python3-%{**}}
 %define         oldpython python
 Name:           python-Cython
-Version:        0.29.22
+Version:        0.29.23
 Release:        0
 Summary:        The Cython compiler for writing C extensions for the Python language
 License:        Apache-2.0
@@ -36,7 +36,7 @@ BuildRequires:  python-rpm-macros
 Requires:       python-devel
 Requires:       python-xml
 Requires(post): update-alternatives
-Requires(postun): update-alternatives
+Requires(postun):update-alternatives
 %ifpython2
 Provides:       %{oldpython}-cython = %{version}
 Obsoletes:      %{oldpython}-cython < %{version}