diff --git a/packages/ilios-common/addon/models/mesh-concept.js b/packages/ilios-common/addon/models/mesh-concept.js
index 2a3f1a126f..e55332be8f 100644
--- a/packages/ilios-common/addon/models/mesh-concept.js
+++ b/packages/ilios-common/addon/models/mesh-concept.js
@@ -13,9 +13,6 @@ export default class MeshConcept extends Model {
   @attr('string')
   cash1Name;
 
-  @attr('string')
-  registryNumber;
-
   @attr('date')
   createdAt;
 
diff --git a/packages/ilios-common/config/api-version.js b/packages/ilios-common/config/api-version.js
index a512f477df..301b64b74d 100644
--- a/packages/ilios-common/config/api-version.js
+++ b/packages/ilios-common/config/api-version.js
@@ -1,3 +1,3 @@
 /* eslint-env node */
 
-module.exports = 'v3.11';
+module.exports = 'v3.12';