diff --git a/build.gradle b/build.gradle
index dc9956d3..5cd5c29f 100644
--- a/build.gradle
+++ b/build.gradle
@@ -107,14 +107,24 @@ task packageLibs(type: Jar) {
     fileMode = 0755
 }
 
+// exclude bunch of com/alphawallet/… but include token/entity and Signable class
 task packageAttestation(type: Jar) {
     from compileJava
     from processResources
-    exclude 'com/alphawallet/attestation/demo'
-    exclude 'com/alphawallet/ethereum/**'
-    exclude 'com/alphawallet/token/**'
-    exclude 'id/attestation/**'
-    exclude 'dk/**'
+    exclude {
+        if(it.relativePath.pathString.startsWith('com/alphawallet/attestation/demo')
+           || it.relativePath.pathString.startsWith('com/alphawallet/ethereum')
+           || it.relativePath.pathString.startsWith('com/alphawallet/token/tools')
+           || it.relativePath.pathString.startsWith('com/alphawallet/token/util')
+           || it.relativePath.pathString.startsWith('id/attestation')
+           || it.relativePath.pathString.startsWith('dk')){
+            return true
+        } else if(!it.directory
+            && it.relativePath.pathString.startsWith('com/alphawallet/token/entity')
+            && it.name != 'Signable.class'){
+            return true
+        }
+    }
     manifest {
         attributes('Implementation-Title': project.name,
                 'Implementation-Version': project.version)