diff --git a/extension/manifest.json b/extension/manifest.json
index e5bf9c4..ff4779b 100644
--- a/extension/manifest.json
+++ b/extension/manifest.json
@@ -1,6 +1,6 @@
 {
   "name": "Vanadium Extension",
-  "version": "0.1.17",
+  "version": "0.1.18",
   "description": "Access and create Vanadium services from JavaScript.",
   "manifest_version": 2,
   "icons": {
diff --git a/src/gen-vdl/v.io/v23/security/index.js b/src/gen-vdl/v.io/v23/security/index.js
index 7ac648e..5848015 100644
--- a/src/gen-vdl/v.io/v23/security/index.js
+++ b/src/gen-vdl/v.io/v23/security/index.js
@@ -375,6 +375,13 @@
 ]);
 
 
+module.exports.InvalidSigningBlessingCaveatError = makeError('v.io/v23/security.InvalidSigningBlessingCaveat', actions.NO_RETRY, {
+  'en': '{1:}{2:} blessing has caveat with UUID {3} which makes it unsuitable for signing -- please use blessings with just Expiry caveats',
+}, [
+  new uniqueid.Id()._type,
+]);
+
+
 
 
 // Services: