diff --git a/SOURCES/openvswitch-3.1.0.patch b/SOURCES/openvswitch-3.1.0.patch
index ae6698d..a152e8c 100644
--- a/SOURCES/openvswitch-3.1.0.patch
+++ b/SOURCES/openvswitch-3.1.0.patch
@@ -6140,6 +6140,18 @@ index d00911828..b0f444169 100644
  install-data-local: ovs-install-data-local
  
  UNINSTALL_LOCAL += ovs-uninstall-local
+diff --git a/python/ovs/db/idl.py b/python/ovs/db/idl.py
+index 9fc2159b0..16ece0334 100644
+--- a/python/ovs/db/idl.py
++++ b/python/ovs/db/idl.py
+@@ -494,6 +494,7 @@ class Idl(object):
+                         if not msg.result[0]:
+                             self.__clear()
+                         self.__parse_update(msg.result[2], OVSDB_UPDATE3)
++                        self.last_id = msg.result[1]
+                     elif self.state == self.IDL_S_DATA_MONITOR_COND_REQUESTED:
+                         self.__clear()
+                         self.__parse_update(msg.result, OVSDB_UPDATE2)
 diff --git a/python/ovs/stream.py b/python/ovs/stream.py
 index ac5b0fd0c..b32341076 100644
 --- a/python/ovs/stream.py
@@ -6869,7 +6881,7 @@ index e72bf0606..fd1c7a239 100644
  [{"count":1},{"details":"cannot delete b row <0> because of 2 remaining reference(s)","error":"referential integrity violation"}]
  [{"count":1}]
 diff --git a/tests/ovsdb-idl.at b/tests/ovsdb-idl.at
-index 5a7e76eaa..9d28672ef 100644
+index 5a7e76eaa..1dd334325 100644
 --- a/tests/ovsdb-idl.at
 +++ b/tests/ovsdb-idl.at
 @@ -94,7 +94,7 @@ m4_define([OVSDB_CHECK_IDL_WRITE_CHANGED_ONLY_C],
@@ -6890,6 +6902,59 @@ index 5a7e76eaa..9d28672ef 100644
              [0], [stdout], [ignore])
     AT_CHECK([sort stdout | uuidfilt]m4_if([$6],,, [[| $6]]),
              [0], [$4])
+@@ -2296,6 +2296,23 @@ CHECK_STREAM_OPEN_BLOCK([Python3], [$PYTHON3 $srcdir/test-stream.py],
+ CHECK_STREAM_OPEN_BLOCK([Python3], [$PYTHON3 $srcdir/test-stream.py],
+                         [tcp6], [[[::1]]])
+ 
++dnl OVSDB_CLUSTER_CHECK_MONITOR_COND_SINCE_TXN_IDS(LOG)
++dnl
++dnl Looks up transaction IDs in the log of OVSDB client application.
++dnl All-zero UUID should not be sent within a monitor request more than once,
++dnl unless some database requests were lost (not replied).
++m4_define([OVSDB_CLUSTER_CHECK_MONITOR_COND_SINCE_TXN_IDS],
++[
++   requests=$(grep -c 'send request' $1)
++   replies=$(grep -c 'received reply' $1)
++
++   if test "$requests" -eq "$replies"; then
++     AT_CHECK([grep 'monitor_cond_since' $1 \
++                | grep -c "00000000-0000-0000-0000-000000000000" | tr -d '\n'],
++              [0], [1])
++   fi
++])
++
+ # same as OVSDB_CHECK_IDL but uses Python IDL implementation with tcp
+ # with multiple remotes to assert the idl connects to the leader of the Raft cluster
+ m4_define([OVSDB_CHECK_IDL_LEADER_ONLY_PY],
+@@ -2311,10 +2328,11 @@ m4_define([OVSDB_CHECK_IDL_LEADER_ONLY_PY],
+    pids=$(cat s2.pid s3.pid s1.pid | tr '\n' ',')
+    echo $pids
+    AT_CHECK([$PYTHON3 $srcdir/test-ovsdb.py  -t30 idl-cluster $srcdir/idltest.ovsschema $remotes $pids $3],
+-        [0], [stdout], [ignore])
++        [0], [stdout], [stderr])
+    remote=$(ovsdb_cluster_leader $remotes "idltest")
+    leader=$(echo $remote | cut -d'|' -f 1)
+    AT_CHECK([grep -F -- "${leader}" stdout], [0], [ignore])
++   OVSDB_CLUSTER_CHECK_MONITOR_COND_SINCE_TXN_IDS([stderr])
+    AT_CLEANUP])
+ 
+ OVSDB_CHECK_IDL_LEADER_ONLY_PY([Check Python IDL connects to leader], 3, ['remote'])
+@@ -2357,6 +2375,7 @@ m4_define([OVSDB_CHECK_CLUSTER_IDL_C],
+    AT_CHECK([sort stdout | uuidfilt]m4_if([$7],,, [[| $7]]),
+             [0], [$5])
+    m4_ifval([$8], [AT_CHECK([grep '$8' stderr], [1])], [], [])
++   OVSDB_CLUSTER_CHECK_MONITOR_COND_SINCE_TXN_IDS([stderr])
+    AT_CLEANUP])
+ 
+ # Same as OVSDB_CHECK_CLUSTER_IDL_C but uses the Python IDL implementation.
+@@ -2377,6 +2396,7 @@ m4_define([OVSDB_CHECK_CLUSTER_IDL_PY],
+    AT_CHECK([sort stdout | uuidfilt]m4_if([$7],,, [[| $7]]),
+             [0], [$5])
+    m4_if([$8], [AT_CHECK([grep '$8' stderr], [1])], [], [])
++   OVSDB_CLUSTER_CHECK_MONITOR_COND_SINCE_TXN_IDS([stderr])
+    AT_CLEANUP])
+ 
+ m4_define([OVSDB_CHECK_CLUSTER_IDL],
 diff --git a/tests/ovsdb-monitor.at b/tests/ovsdb-monitor.at
 index 3b622b3ec..82b0e9362 100644
 --- a/tests/ovsdb-monitor.at
diff --git a/SPECS/openvswitch3.1.spec b/SPECS/openvswitch3.1.spec
index 6258d63..4672a30 100644
--- a/SPECS/openvswitch3.1.spec
+++ b/SPECS/openvswitch3.1.spec
@@ -57,7 +57,7 @@ Summary: Open vSwitch
 Group: System Environment/Daemons daemon/database/utilities
 URL: http://www.openvswitch.org/
 Version: 3.1.0
-Release: 54%{?dist}
+Release: 55%{?dist}
 
 # Nearly all of openvswitch is ASL 2.0.  The bugtool is LGPLv2+, and the
 # lib/sflow*.[ch] files are SISSL
@@ -754,6 +754,12 @@ exit 0
 %endif
 
 %changelog
+* Mon Sep 18 2023 Open vSwitch CI <ovs-ci@redhat.com> - 3.1.0-55
+- Merging upstream branch-3.1 [RH git: e7379c38f3]
+    Commit list:
+    95394b83c0 python: idl: Fix last-id update from a monitor reply.
+
+
 * Sat Sep 09 2023 Open vSwitch CI <ovs-ci@redhat.com> - 3.1.0-54
 - Merging upstream branch-3.1 [RH git: 31ed7bcbea]
     Commit list: