diff --git a/mocha-common/data/libraries/yaml/net.alcetech.Mocha.System/000-EntityDefinitions/002-Attributes.yaml b/mocha-common/data/libraries/yaml/net.alcetech.Mocha.System/000-EntityDefinitions/002-Attributes.yaml
index 8829748..aad378b 100644
--- a/mocha-common/data/libraries/yaml/net.alcetech.Mocha.System/000-EntityDefinitions/002-Attributes.yaml
+++ b/mocha-common/data/libraries/yaml/net.alcetech.Mocha.System/000-EntityDefinitions/002-Attributes.yaml
@@ -71,6 +71,7 @@
   - IDA_Shared: '{4f4f2b73-6b16-4cbb-a254-a9e557040bca}'
   - IDA_UserIsLoggedIn: '{8e93d9f3-a897-4c97-935c-b3427f90633b}'
   - IDA_ModuleHasParentModule: '{dd439c24-fb12-48b0-8b11-1b8d473cadef}'
+  - IDA_Derived: '{66991ca1-ef08-4f30-846c-4984c2a3139d}'
   
   - IDA_IncludeMIs: '{c97c2410-30d8-41eb-9b71-2aecc63abf46}'
   - IDA_IncludeSuperclassMethods: '{3828a3f7-57ff-409b-b814-338d5ff51e19}'
diff --git a/mocha-common/data/libraries/yaml/net.alcetech.Mocha.System/003-Classes/00005-BooleanAttribute.yaml b/mocha-common/data/libraries/yaml/net.alcetech.Mocha.System/003-Classes/00005-BooleanAttribute.yaml
index 78f39ce..e4beac9 100644
--- a/mocha-common/data/libraries/yaml/net.alcetech.Mocha.System/003-Classes/00005-BooleanAttribute.yaml
+++ b/mocha-common/data/libraries/yaml/net.alcetech.Mocha.System/003-Classes/00005-BooleanAttribute.yaml
@@ -108,6 +108,9 @@
     - instance: '&IDA_Disabled;'
       index: 42
       name: 'Disabled'
+    - instance: '&IDA_Derived;'
+      index: 45
+      name: 'Derived'
     - instance: '&IDA_EvaluateWorkSet;'
       index: 49
       name: 'Evaluate Work Set'