diff --git a/jsonref-0.2.tar.gz b/jsonref-0.2.tar.gz
deleted file mode 100644
index 6f8e8d7..0000000
--- a/jsonref-0.2.tar.gz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:f3c45b121cf6257eafabdc3a8008763aed1cd7da06dbabc59a9e4d2a5e4e6697
-size 13032
diff --git a/jsonref-1.1.0.tar.gz b/jsonref-1.1.0.tar.gz
new file mode 100644
index 0000000..316ddca
--- /dev/null
+++ b/jsonref-1.1.0.tar.gz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:32fe8e1d85af0fdefbebce950af85590b22b60f9e95443176adbde4e1ecea552
+size 8814
diff --git a/python-jsonref.changes b/python-jsonref.changes
index 1b0e394..72a1096 100644
--- a/python-jsonref.changes
+++ b/python-jsonref.changes
@@ -1,3 +1,27 @@
+-------------------------------------------------------------------
+Sat Jan 13 21:01:00 UTC 2024 - Dirk Müller <dmueller@suse.com>
+
+- update to 1.1.0:
+  * Fixes documents where the root is a reference object not
+    being cached
+  * Allows a reference object to refer to a fragment within
+    itself. fix #51, #40
+  * Extra properties of a reference object will now have
+    references resolved.
+- update to 1.0.1:
+  * Fix issue with proxies=False where it would not recurse
+    through references to remove the proxies. #48
+- update to 1.0.0:
+  * `replace_refs` is now a function rather than a class method
+    of `JsonRef` (The class method is still around, but
+    deprecated.)
+  * New options were also added to `replace_refs`
+  * `jsonloader` is now a plan function rather than an instance
+    of a class. (This is a breaking change if you were
+    subclassing `JsonLoader`)
+- add patch use-pdm-backend.patch: switch to more modern
+  pdm-backend
+
 -------------------------------------------------------------------
 Thu Aug  1 08:07:48 UTC 2019 - Tomáš Chvátal <tchvatal@suse.com>
 
@@ -7,16 +31,16 @@ Thu Aug  1 08:07:48 UTC 2019 - Tomáš Chvátal <tchvatal@suse.com>
 -------------------------------------------------------------------
 Mon Feb  4 15:45:55 UTC 2019 - Bruno Friedmann <bruno@ioda-net.ch>
 
-- Update to version 0.2 (python 3.7 support) 
+- Update to version 0.2 (python 3.7 support)
 - Packaging : fix test call
 
 -------------------------------------------------------------------
 Tue May 22 12:46:01 UTC 2018 - bruno@ioda-net.ch
 
-- Packaging : 
+- Packaging :
   + move do singlespec
-  + spec-cleaner  
-  + Add tests 
+  + spec-cleaner
+  + Add tests
 
 -------------------------------------------------------------------
 Sat Oct 29 01:54:59 UTC 2016 - termim@gmail.com
diff --git a/python-jsonref.spec b/python-jsonref.spec
index e0d0506..6570d8d 100644
--- a/python-jsonref.spec
+++ b/python-jsonref.spec
@@ -1,7 +1,7 @@
 #
 # spec file for package python-jsonref
 #
-# Copyright (c) 2019 SUSE LINUX GmbH, Nuernberg, Germany.
+# Copyright (c) 2024 SUSE LLC
 #
 # All modifications and additions to the file contributed by third parties
 # remain the property of their copyright owners, unless otherwise agreed
@@ -18,16 +18,19 @@
 
 %{?!python_module:%define python_module() python-%{**} python3-%{**}}
 Name:           python-jsonref
-Version:        0.2
+Version:        1.1.0
 Release:        0
 Summary:        An implementation of JSON Reference for Python
 License:        MIT
 Group:          Development/Languages/Python
 URL:            https://github.com/gazpachoking/jsonref
 Source:         https://files.pythonhosted.org/packages/source/j/jsonref/jsonref-%{version}.tar.gz
+Patch1:         use-pdm-backend.patch
+BuildRequires:  %{python_module pdm-backend}
+BuildRequires:  %{python_module pip}
 BuildRequires:  %{python_module pytest-mock}
 BuildRequires:  %{python_module pytest}
-BuildRequires:  %{python_module setuptools}
+BuildRequires:  %{python_module wheel}
 BuildRequires:  dos2unix
 BuildRequires:  fdupes
 BuildRequires:  python-rpm-macros
@@ -50,22 +53,21 @@ almost completely transparent.
 Complete docs can be found at http://jsonref.readthedocs.org/
 
 %prep
-%setup -q -n jsonref-%{version}
-dos2unix README.rst
+%autosetup -p1 -n jsonref-%{version}
 
 %build
-%python_build
+%pyproject_wheel
 
 %install
-%python_install
+%pyproject_install
 %python_expand %fdupes %{buildroot}%{$python_sitelib}
 
-%check
-%pytest tests.py
-
 %files %{python_files}
 %license LICENSE
-%doc README.rst
-%{python_sitelib}/*
+%doc README.md
+%{python_sitelib}/jsonref.py
+%{python_sitelib}/proxytypes.py
+%pycache_only %{python_sitelib}/__pycache__/*
+%{python_sitelib}/jsonref-%{version}.dist-info
 
 %changelog
diff --git a/use-pdm-backend.patch b/use-pdm-backend.patch
new file mode 100644
index 0000000..8e20cea
--- /dev/null
+++ b/use-pdm-backend.patch
@@ -0,0 +1,11 @@
+--- jsonref-1.1.0/pyproject.toml	2023-01-16 17:06:47.203465200 +0100
++++ jsonref-1.1.0/pyproject.toml	2024-01-13 21:57:26.399821227 +0100
+@@ -37,6 +37,6 @@
+ 
+ [build-system]
+ requires = [
+-    "pdm-pep517>=1.0.0",
++    "pdm-backend"
+ ]
+-build-backend = "pdm.pep517.api"
++build-backend = "pdm.backend"