diff --git a/mariadb.spec b/mariadb.spec
index 669ab60..6e905e2 100644
--- a/mariadb.spec
+++ b/mariadb.spec
@@ -11,7 +11,7 @@
 # The last version on which the full testsuite has been run
 # In case of further rebuilds of that version, don't require full testsuite to be run
 # run only "main" suite
-%global last_tested_version 10.5.19
+%global last_tested_version 10.5.20
 # Set to 1 to force run the testsuite even if it was already tested in current version
 %global force_run_testsuite 0
 
@@ -1246,6 +1246,8 @@ export MTR_BUILD_THREAD=$(( $(date +%s) % 1100 ))
     perl ./mysql-test-run.pl $common_testsuite_arguments --skip-ssl --big-test --suite=spider,spider/bg,spider/bugfix,spider/handler \
     %if %{ignore_testsuite_result}
       --max-test-fail=999 || :
+    %else
+      --skip-test-list=unstable-tests
     %endif
   # blank line
   fi
diff --git a/rh-skipped-tests-base.list b/rh-skipped-tests-base.list
index 1a86cf8..49f481c 100644
--- a/rh-skipped-tests-base.list
+++ b/rh-skipped-tests-base.list
@@ -71,17 +71,18 @@ main.loadxml                                 :
 main.lock_kill                               :
 
 # Fails since 10.5.20
-innodb.innodb_bug51920			     :
+innodb.innodb_bug51920			         :
+innodb.row_size_error_log_warnings_3     :
 binlog_encryption.rpl_cant_read_event_incident :
-spider/bg.spider_fixes			     :
-spider/bugfix.mdev_29904		     :
+bg.spider_fixes			                 : 
+bugfix.mdev_29904		                 : "[Warning] mariadbd: Can't get hardware address with error 0"
 sys_vars.completion_type_func		     :
-rpl.rpl_report_port			     :
-rpl.rpl_reset_slave_fail		     :
-rpl.rpl_xa_survive_disconnect_lsu_off	     :
-rpl.rpl_heartbeat_basic			     :
+rpl.rpl_report_port			             :
+rpl.rpl_reset_slave_fail		         :
+rpl.rpl_xa_survive_disconnect_lsu_off	 :
+rpl.rpl_heartbeat_basic			         :
 rpl.rpl_xa_survive_disconnect		     :
-rpl.rpl_err_ignoredtable		     :
+rpl.rpl_err_ignoredtable		         :
 rpl.rpl_row_img_sequence_full		     :
 rpl.rpl_row_img_sequence_min		     :
 rpl.rpl_row_img_sequence_noblob		     :
diff --git a/rh-skipped-tests-ppc.list b/rh-skipped-tests-ppc.list
index 403da66..7b982e0 100644
--- a/rh-skipped-tests-ppc.list
+++ b/rh-skipped-tests-ppc.list
@@ -1,5 +1,7 @@
 # Fails on ppc64le since 10.4.12
 oqgraph.social : 
 
-# Fails since 10.5.2
-rh-skipped-tests-ppc.list :
+# Fails since 10.5.20
+innodb.innodb_defrag_concurrent        :
+parts.partition_alter4_innodb          :
+rpl.rpl_parallel_optimistic_xa_lsu_off :