diff --git a/.changelog/5469.bugfix.md b/.changelog/5469.bugfix.md
new file mode 100644
index 00000000000..28fcdce1bbf
--- /dev/null
+++ b/.changelog/5469.bugfix.md
@@ -0,0 +1,5 @@
+go/p2p/peermgmt/backup: Prevent overwriting TTL when restoring peers
+
+If the peer address of a seed node was added to the libp2p address book
+before peer manager restored backup peer addresses, its permanent TTL
+was replaced with the TTL for recently connected peers.
diff --git a/go/p2p/peermgmt/backup.go b/go/p2p/peermgmt/backup.go
index 378b3d67a94..9062f127b4e 100644
--- a/go/p2p/peermgmt/backup.go
+++ b/go/p2p/peermgmt/backup.go
@@ -90,7 +90,8 @@ func (b *peerstoreBackup) restore(ctx context.Context) error {
 	}
 
 	for _, info := range peers[peerstoreNamespace] {
-		b.store.SetAddrs(info.ID, info.Addrs, peerstore.RecentlyConnectedAddrTTL)
+		// Make sure to add, not set, the address to avoid overwriting the TTL.
+		b.store.AddAddrs(info.ID, info.Addrs, peerstore.RecentlyConnectedAddrTTL)
 	}
 
 	return nil