diff --git a/mod-orgs/schemas/banking_information.json b/mod-orgs/schemas/banking_information.json
index 326c5232..15f72e47 100644
--- a/mod-orgs/schemas/banking_information.json
+++ b/mod-orgs/schemas/banking_information.json
@@ -7,6 +7,10 @@
       "description": "The unique id of this banking information",
       "$ref": "../../common/schemas/uuid.json"
     },
+    "_version": {
+      "type": "integer",
+      "description": "Record version for optimistic locking"
+    },
     "organizationId": {
       "description": "The unique id of organization",
       "$ref": "../../common/schemas/uuid.json"
diff --git a/mod-orgs/schemas/contact.json b/mod-orgs/schemas/contact.json
index 0ddf6666..264af52d 100644
--- a/mod-orgs/schemas/contact.json
+++ b/mod-orgs/schemas/contact.json
@@ -7,6 +7,10 @@
       "description": "The unique id of this contact",
       "$ref": "../../common/schemas/uuid.json"
     },
+    "_version": {
+      "type": "integer",
+      "description": "Record version for optimistic locking"
+    },
     "prefix": {
       "description": "The prefix for this contact person",
       "type": "string"
diff --git a/mod-orgs/schemas/organization_type.json b/mod-orgs/schemas/organization_type.json
index 5b09b369..de40f444 100644
--- a/mod-orgs/schemas/organization_type.json
+++ b/mod-orgs/schemas/organization_type.json
@@ -7,6 +7,10 @@
       "description": "The unique id of this organization type",
       "$ref": "../../common/schemas/uuid.json"
     },
+    "_version": {
+      "type": "integer",
+      "description": "Record version for optimistic locking"
+    },
     "name": {
       "description": "The name of this organization type",
       "type": "string"
diff --git a/mod-orgs/schemas/setting.json b/mod-orgs/schemas/setting.json
index b023e3b1..c5218f82 100644
--- a/mod-orgs/schemas/setting.json
+++ b/mod-orgs/schemas/setting.json
@@ -7,6 +7,10 @@
       "description": "The unique id of this setting",
       "$ref": "../../common/schemas/uuid.json"
     },
+    "_version": {
+      "type": "integer",
+      "description": "Record version for optimistic locking"
+    },
     "key": {
       "description": "The key of this setting",
       "type": "string"