diff --git a/slurm.changes b/slurm.changes
index 0a57b33..61c90ca 100644
--- a/slurm.changes
+++ b/slurm.changes
@@ -1,3 +1,14 @@
+-------------------------------------------------------------------
+Tue Nov 28 14:14:28 UTC 2023 - Egbert Eich <eich@suse.com>
+
+- Explicitly create an Obsoletes: entry for each package version
+  that is obsoleted by the present version. These are all published
+  versions of the last two major releases as well as all minor
+  versions of the present release lower than the current one
+  (bsc#1216869 2nd part).
+  This prevents the current version to upgrade a old Slurm version
+  for which no upgrade path exists.
+
 -------------------------------------------------------------------
 Mon Nov 20 15:29:55 UTC 2023 - Egbert Eich <eich@suse.com>
 
diff --git a/slurm.spec b/slurm.spec
index 824e5bf..632196f 100644
--- a/slurm.spec
+++ b/slurm.spec
@@ -18,6 +18,7 @@
 
 # Check file META in sources: update so_version to (API_CURRENT - API_AGE)
 %define so_version 39
+# Make sure to update `upgrades` as well!
 %define ver 23.02.6
 %define _ver _23_02
 #%%define rc_v 0rc1
@@ -72,9 +73,26 @@ Conflicts:      %{*} >= %{ver_m}.99 }
 %if 0%{?base_ver} > 0 && 0%{?base_ver} < %{lua:x=string.gsub(rpm.expand("%_ver"),"_","");print(x)}
 %define upgrade 1
 %endif
+%define upgrade_versions upgrades
+%define do_obsoletes() %{lua:
+                      local filename = rpm.expand("%_sourcedir") .. "/" .. rpm.expand("%upgrade_versions")
+                      local version = rpm.expand("%version")
+                      local arg = rpm.expand("%{1}")
+                      local f = io.open(filename ,"r")
+                      local em = false
+                      if f~=nil then
+                        f.close(f)
+                        for line in io.lines(filename) do
+			  if em then print('\\n') else em = true end
+                          print("Obsoletes:      " .. arg .. " = " .. line)
+                        end
+                      else
+                        print("Obsoletes:      " .. arg .. " < " .. version)
+                      end }
+
 %define upgrade_dep() %{?upgrade: #
 Provides:       %{*} = %{version}
-Obsoletes:      %{*} < %{version}
+%{do_obsoletes  %{*}}
 Conflicts:      %{*} }
 
 %if 0%{?suse_version} >= 1500
@@ -145,7 +163,8 @@ Group:          Productivity/Clustering/Computing
 URL:            https://www.schedmd.com
 Source:         https://download.schedmd.com/slurm/%{pname}-%{dl_ver}.tar.bz2
 #Source:         https://github.com/SchedMD/slurm/archive/refs/tags/%{pname}-%{dl_ver}.tar.gz
-Source1:        slurm-rpmlintrc
+Source1:        %upgrade_versions
+Source2:        slurm-rpmlintrc
 Source10:       slurmd.xml
 Source11:       slurmctld.xml
 Source12:       slurmdbd.xml
diff --git a/upgrades b/upgrades
new file mode 100644
index 0000000..55ae78f
--- /dev/null
+++ b/upgrades
@@ -0,0 +1,7 @@
+23.02.5
+23.02.3
+23.02.0
+22.05.10
+22.05.5
+22.05.2
+22.05.0