diff --git a/spec/schemas/security._common.yaml b/spec/schemas/security._common.yaml
index 2fcce2ec2..9980212ef 100644
--- a/spec/schemas/security._common.yaml
+++ b/spec/schemas/security._common.yaml
@@ -142,12 +142,18 @@ components:
         backend_roles:
           type: array
           description: Backend roles associated with the user.
+          items:
+            type: string
         custom_attribute_names:
           type: array
           description: Name of the attributes associated with the user.
+          items:
+            type: string
         roles:
           type: array
           description: Roles associated with the user.
+          items:
+            type: string
         tenants:
           type: object
           description: Tenants the user has access to with read-write or read-only access indicator.
@@ -255,6 +261,8 @@ components:
         config:
           type: array
           description: List of configs to be upgraded.
+          items:
+            type: string
 
     CreateTenantParams:
       type: object
@@ -292,6 +300,8 @@ components:
         sign_in_options:
           type: array
           description: List of available sign-in options available.
+          items:
+            type: string
         password_validation_error_message:
           type: string
           description: Error message when password validation fails.
@@ -547,9 +557,13 @@ components:
         peer_certificates_list:
           type: array
           description: List of domain names from peer certificates.
+          items:
+            type: string
         local_certificates_list:
           type: array
           description: List of domain names from local certificates.
+          items:
+            type: string
         ssl_protocol:
           type: string
           description: Protocol for this ssl setup.