diff --git a/_service b/_service
index 3e6efd6..dc8e772 100644
--- a/_service
+++ b/_service
@@ -2,7 +2,7 @@
   <service name="tar_scm" mode="disabled">
     <param name="url">https://github.com/python-jsonschema/referencing</param>
     <param name="scm">git</param>
-    <param name="revision">v0.28.4</param>
+    <param name="revision">v0.28.5</param>
     <param name="versionformat">@PARENT_TAG@</param>
     <param name="changesgenerate">enable</param>
     <param name="versionrewrite-pattern">v(.*)</param>
diff --git a/_servicedata b/_servicedata
index 854422b..3024798 100644
--- a/_servicedata
+++ b/_servicedata
@@ -1,4 +1,4 @@
 <servicedata>
 <service name="tar_scm">
                 <param name="url">https://github.com/python-jsonschema/referencing</param>
-              <param name="changesrevision">de0d25830a19539d8b0bb31c8661ad65f80011cc</param></service></servicedata>
\ No newline at end of file
+              <param name="changesrevision">c22e9213bb9390cfdfef9e06efb987979531a4b7</param></service></servicedata>
\ No newline at end of file
diff --git a/python-referencing.changes b/python-referencing.changes
index 07eedf2..068c178 100644
--- a/python-referencing.changes
+++ b/python-referencing.changes
@@ -1,3 +1,12 @@
+-------------------------------------------------------------------
+Thu May 25 06:24:03 UTC 2023 - kastl@b1-systems.de
+
+- Update to version 0.28.5:
+  * Fill in the missing coverage, and ensure it runs in CI.
+  * Add pip-audit to CI.
+  * Explicitly ensure we catch calling .anchor on a nonexistent
+    resource.
+
 -------------------------------------------------------------------
 Wed May 24 05:01:46 UTC 2023 - kastl@b1-systems.de
 
diff --git a/python-referencing.spec b/python-referencing.spec
index 006a230..8bcfc8d 100644
--- a/python-referencing.spec
+++ b/python-referencing.spec
@@ -26,7 +26,7 @@
 %endif
 %{?sle15_python_module_pythons}
 Name:           python-referencing%{psuffix}
-Version:        0.28.4
+Version:        0.28.5
 Release:        0
 Summary:        JSON Referencing + Python
 License:        MIT
diff --git a/referencing-0.28.4.tar.gz b/referencing-0.28.4.tar.gz
deleted file mode 100644
index 176db4d..0000000
--- a/referencing-0.28.4.tar.gz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:cd630d31249018f2e6aeae82ea07d8a868a99a473fad6d6daece75bfea3d75dd
-size 404486
diff --git a/referencing-0.28.5.tar.gz b/referencing-0.28.5.tar.gz
new file mode 100644
index 0000000..1067d88
--- /dev/null
+++ b/referencing-0.28.5.tar.gz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d5fbc627427ef1765c5e460bfa4bb88377fbb6df3757e22943aeba6a23633d64
+size 432936