diff --git a/slurm.changes b/slurm.changes
index 2220465..b081fa1 100644
--- a/slurm.changes
+++ b/slurm.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Thu Jul 21 19:20:42 UTC 2022 - Bernhard Wiedemann <bwiedemann@suse.com>
+
+- make slurmtest.tar reproducible
+
 -------------------------------------------------------------------
 Thu Jul 14 15:20:46 UTC 2022 - Egbert Eich <eich@suse.com>
 
diff --git a/slurm.spec b/slurm.spec
index dc231c2..f4e0acb 100644
--- a/slurm.spec
+++ b/slurm.spec
@@ -873,7 +873,13 @@ EOF
 mkdir -p %{buildroot}/srv/slurm-testsuite/shared
 mkdir -p %{buildroot}%_localstatedir/lib/slurm/shared
 cd %{buildroot}/srv/slurm-testsuite
-tar --group=%slurm_g --owner=%slurm_u -cjf /tmp/slurmtest.tar.bz2 *
+find -type f -name "*.[ao]" -print | while read f; do
+  # drop non-deterministic lto bits from .o files
+  strip -p --discard-locals -R .gnu.lto_* -R .gnu.debuglto_* -N __gnu_lto_v1 $f
+done
+tar --group=%slurm_g --owner=%slurm_u \
+  --sort=name --mtime="@${SOURCE_DATE_EPOCH:-`date +%%s`}" --pax-option=exthdr.name=%d/PaxHeaders/%f,delete=atime,delete=ctime \
+  -cjf /tmp/slurmtest.tar.bz2 *
 cd -
 rm -rf %{buildroot}/srv/slurm-testsuite
 mkdir -p %{buildroot}/srv/slurm-testsuite