diff --git a/README.md b/README.md
index ef4b671..13af032 100644
--- a/README.md
+++ b/README.md
@@ -206,13 +206,15 @@ The following prefixes are supported:
 
 ## `attestation-add` Inputs
 
-| <!-- -->         | <!-- -->                      | <!-- --> | <!-- -->                          |
-|:-----------------|:------------------------------|:---------|:----------------------------------|
-| `file`           | **optional** default is empty | `string` | File path to the attestation file |
-| `predicate-type` | **optional** default is empty | `string` | Predicate type of the attestation |
+| <!-- -->         | <!-- -->                      | <!-- -->  | <!-- -->                            |
+|:-----------------|:------------------------------|:----------|:------------------------------------|
+| `tags`           | **optional** default is empty | `string`  | Additional tags for the attestation |
+| `file`           | **optional** default is empty | `string`  | File path to the attestation file   |
+| `predicate-type` | **optional** default is empty | `string`  | Predicate type of the attestation   |
+| `referrer`       | **optional** default is false | `boolean` | Store attestations in Docker Scout  |
 
 ## Example usage
-
+    
 ### Build an image, push and compare
 
 ```yaml
diff --git a/action.yaml b/action.yaml
index 8544ce3..bfbd28b 100644
--- a/action.yaml
+++ b/action.yaml
@@ -117,12 +117,26 @@ inputs:
     description: Output file for the SBOM
 
   # attestation add flags
+  tags:
+    required: false
+    description: List of tags to add to the attestation
   file:
     required: false
     description: File path to the attestation file
   predicate-type:
     required: false
     description: Predicate type of the attestation
+  referrer:
+    required: false
+    description: Enable OCI referrer API for pushing attestation
+    default: false
+  # credentials needed to push images
+  registry-write-user:
+    description: Registry user to push attestations
+    required: false
+  registry-write-password:
+    description: Registry password to push attestations
+    required: false
 
   dockerhub-user:
     required: false
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