diff --git a/docs/v1/annotations.md b/docs/v1/annotations.md
index cd553e3..77430be 100644
--- a/docs/v1/annotations.md
+++ b/docs/v1/annotations.md
@@ -34,3 +34,6 @@ This property contains arbitrary metadata, and SHOULD follow the rules of [OCI i
 ### Layer Annotation Keys
 
 - **`org.cnai.model.readme`**: Specifies the layer is a README.md file (boolean), such as `true` or `false`.
+- **`org.cnai.model.license`**: Specifies the layer is a LICENSE file (boolean), such as `true` or `false`.
+- **`org.cnai.model.config`**: Specifies the layer is a configuration file (boolean), such as `true` or `false`.
+- **`org.cnai.model.model`**: Specifies the layer is a model file (boolean), such as `true` or `false`.
diff --git a/specs-go/v1/annotations.go b/specs-go/v1/annotations.go
index a7978fa..914ce68 100644
--- a/specs-go/v1/annotations.go
+++ b/specs-go/v1/annotations.go
@@ -83,4 +83,13 @@ const (
 const (
 	// AnnotationReadme is the annotation key for the layer is a README.md file (boolean), such as `true` or `false`.
 	AnnotationReadme = "org.cnai.model.readme"
+
+	// AnnotationLicense is the annotation key for the layer is a license file (boolean), such as `true` or `false`.
+	AnnotationLicense = "org.cnai.model.license"
+
+	// AnnotationConfig is the annotation key for the layer is a configuration file (boolean), such as `true` or `false`.
+	AnnotationConfig = "org.cnai.model.config"
+
+	// AnnotationModel is the annotation key for the layer is a model file (boolean), such as `true` or `false`.
+	AnnotationModel = "org.cnai.model.model"
 )