diff --git a/.hub-write-lock b/.hub-write-lock
index 9aa492a..e34885b 100644
--- a/.hub-write-lock
+++ b/.hub-write-lock
@@ -1 +1 @@
-98137
+107
diff --git a/trust/keys/plan-git-harden-sh-design-spec-2153.pub b/trust/keys/plan-git-harden-sh-design-spec-2153.pub
new file mode 100644
index 0000000..a4ba1a5
--- /dev/null
+++ b/trust/keys/plan-git-harden-sh-design-spec-2153.pub
@@ -0,0 +1 @@
+ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIBwDU4LSGVWu7leZ/Y5RSz/UnZHkgdInXPr21KI1Bjku crosslink-agent:plan-git-harden-sh-design-spec-2153@MacBook-Air-4.local