diff --git a/__tests__/.fixtures/bake-03-default.json b/__tests__/.fixtures/bake-03-default.json
index 89ddf04..2f29ff2 100644
--- a/__tests__/.fixtures/bake-03-default.json
+++ b/__tests__/.fixtures/bake-03-default.json
@@ -9,7 +9,7 @@
           "type": "provenance"
         },
         {
-          "disabled": "true",
+          "disabled": true,
           "type": "sbom"
         }
       ],
diff --git a/src/buildx/bake.ts b/src/buildx/bake.ts
index ebb67e0..36cc0cd 100644
--- a/src/buildx/bake.ts
+++ b/src/buildx/bake.ts
@@ -238,6 +238,9 @@ export class Bake {
         case 'type':
           attestEntry.type = value;
           break;
+        case 'disabled':
+          attestEntry.disabled = Util.parseBool(value);
+          break;
         default:
           attestEntry[key] = value;
       }
diff --git a/src/types/buildx/bake.ts b/src/types/buildx/bake.ts
index 9f647c0..0bbba86 100644
--- a/src/types/buildx/bake.ts
+++ b/src/types/buildx/bake.ts
@@ -52,7 +52,8 @@ export interface Target {
 
 export interface AttestEntry {
   type: string;
-  [key: string]: string;
+  disabled?: string | boolean;
+  [key: string]: string | boolean | undefined;
 }
 
 export interface CacheEntry {