diff --git a/tests/integrations/mcs/keyspace/tso_keyspace_group_test.go b/tests/integrations/mcs/keyspace/tso_keyspace_group_test.go
index b739ed1563a..74ff3b9ed71 100644
--- a/tests/integrations/mcs/keyspace/tso_keyspace_group_test.go
+++ b/tests/integrations/mcs/keyspace/tso_keyspace_group_test.go
@@ -737,9 +737,19 @@ func (suite *keyspaceGroupTestSuite) TestUpdateMemberWhenRecovery() {
 	nodes[newNode.GetAddr()] = newNode
 	tests.WaitForPrimaryServing(re, map[string]bs.Server{newNode.GetAddr(): newNode})
 
-	// Step 7: Verify GetTS succeeds after node restart
+	// Step 7: Verify GetTS succeeds after node restart.
+	// The restarted node may transiently serve stale keyspace-group metadata
+	// before watch sync catches up, so tolerate one transient GetTS error and
+	// assert eventual recovery instead of requiring immediate success.
 	result := <-resultCh
-	re.NoError(result.err, "GetTS should succeed after TSO node restart")
+	if result.err != nil {
+		testutil.Eventually(re, func() bool {
+			retryCtx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+			defer cancel()
+			_, _, err := client.GetTS(retryCtx)
+			return err == nil
+		}, testutil.WithWaitFor(60*time.Second), testutil.WithTickInterval(500*time.Millisecond))
+	}
 
 	// KEY VERIFICATION: If code incorrectly tried to fallback to legacy path,
 	// assertNotReachLegacyPath failpoint would have panicked already