diff --git a/common/syncthing-data.nix b/common/syncthing-data.nix
index 5cff3ea..fb29a3b 100644
--- a/common/syncthing-data.nix
+++ b/common/syncthing-data.nix
@@ -17,7 +17,7 @@
     settings = {
       devices = {
         "c1" = {
-          id = "53JGRHQ-VGBYIGH-7IT6Z5S-3IMRY2I-LJZAE3B-QUDH3QF-4F4QKVC-VBWPJQ4";
+          id = "XJECP3R-AZHCAYX-UIQKHIT-AHBK5UM-KM7T4OV-B7SEUCW-ZE2UFPG-7BNAIQZ";
         };
         "c2" = {
           id = "Z3D476N-PUV6WAD-DSJWVBO-TWEOD4I-KDDMNRB-QEBOP6T-BYPGYTX-RAAYGAW";
diff --git a/stateful-commands.txt b/stateful-commands.txt
index 9089621..25f6a51 100644
--- a/stateful-commands.txt
+++ b/stateful-commands.txt
@@ -28,6 +28,9 @@ replacing failed / reinstalled gluster volume (c1 in this case). all commands on
   * gluster peer probe 192.168.1.71 (not c1 because switching to IPs to avoid DNS/tailscale issues)
   * gluster volume add-brick compute replica 3 192.168.1.71:/persist/glusterfs/compute/brick1
 
+replacing failed / reinstalled host - other things:
+  * syncthing ID needs updating in common/syncthing-data.nix
+
 kopia repository server setup (on a non-NixOS host at the time):
   * kopia repository create filesystem --path /backup/persist
   * kopia repository connect filesystem --path=/backup/persist