diff --git a/example/jose_example.dart b/example/jose_example.dart
index ed82546..2bdc3e5 100644
--- a/example/jose_example.dart
+++ b/example/jose_example.dart
@@ -72,7 +72,7 @@ Future<void> example2() async {
       algorithm: 'HS256');
 
   // build the jws
-  var jws = builder.build();
+  var jws = await builder.build();
 
   // output the compact serialization
   print('jws compact serialization: ${jws.toCompactSerialization()}');
@@ -189,7 +189,7 @@ Future<void> example4() async {
   builder.encryptionAlgorithm = 'A128CBC-HS256';
 
   // build the jws
-  var jwe = builder.build();
+  var jwe = await builder.build();
 
   // output the compact serialization
   print('jwe compact serialization: ${jwe.toCompactSerialization()}');
@@ -257,7 +257,7 @@ Future<void> example6() async {
       algorithm: 'HS256');
 
   // build the jws
-  var jws = builder.build();
+  var jws = await builder.build();
 
   // output the compact serialization
   print('jwt compact serialization: ${jws.toCompactSerialization()}');
@@ -289,7 +289,7 @@ Future<void> example7() async {
   builder.addRecipient(key, algorithm: 'RS512');
 
   // build the jws
-  var jws = builder.build();
+  var jws = await builder.build();
 
   // output the compact serialization
   print('jwt compact serialization: ${jws.toCompactSerialization()}');
@@ -304,7 +304,7 @@ Future<void> example8() async {
 
   final hash = utf8.encode('TEST');
 
-  var sig = key.sign(hash);
+  var sig = await key.sign(hash);
   final valid = key.verify(hash, sig);
 
   print('valid? $valid');
@@ -411,7 +411,7 @@ Future<void> example10() async {
   builder.compressionAlgorithm = 'DEF';
 
   // build the jws
-  var jwe = builder.build();
+  var jwe = await builder.build();
 
   // output the compact serialization
   print('jwe compact serialization: ${jwe.toCompactSerialization()}');
diff --git a/lib/src/jwk.dart b/lib/src/jwk.dart
index 23c4959..df03086 100644
--- a/lib/src/jwk.dart
+++ b/lib/src/jwk.dart
@@ -16,10 +16,7 @@ import 'package:http_parser/http_parser.dart';
 import 'package:jose/src/jwa.dart';
 import 'package:meta/meta.dart';
 import 'package:x509/x509.dart' as x509;
-import 'package:pointycastle/ecc/ecdh.dart' as ecdh;
 import 'package:pointycastle/pointycastle.dart' as ecdh;
-import 'package:pointycastle/ecc/api.dart' as ecdh;
-import 'package:pointycastle/ecc/curves/brainpoolp256r1.dart' as ecdh;
 import 'package:pointycastle/digests/sha256.dart' as ecdh;
 
 import 'jose.dart';
@@ -262,6 +259,7 @@ class JsonWebKey extends JsonObject {
     }
 
     return alg
+        // ignore: invalid_use_of_visible_for_testing_member
         .jwkFromCryptoKeyPair(KeyPair.symmetric(SymmetricKey(keyValue: key)));
   }
 
diff --git a/pubspec.yaml b/pubspec.yaml
index ebd0e07..67c5094 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -5,6 +5,7 @@ homepage: https://github.com/appsup-dart/jose
 repository: https://github.com/appsup-dart/jose
 funding:
   - https://github.com/sponsors/rbellens
+publish_to: 'none'
 
 environment:
   sdk: ^3.0.0
@@ -25,6 +26,7 @@ dependencies:
   asn1lib: ^1.0.0
   collection: ^1.15.0
   archive: '>=3.6.1 <5.0.0'
+  pointycastle: ^3.9.1
 
 dev_dependencies:
   test: ^1.24.4
diff --git a/test/jwe_test.dart b/test/jwe_test.dart
index 08bb2cd..03f7aa1 100644
--- a/test/jwe_test.dart
+++ b/test/jwe_test.dart
@@ -326,6 +326,7 @@ DwwoHgQL4BQ6fCuuc26m93ClRTrYqjo418x5fDMyvr7KWkIMwVU6xcWJNg==
     final compactJwt =
         "eyJhbGciOiJFQ0RILUVTIiwidHlwIjoiSldUIiwiZW5jIjoiQTI1NkdDTSIsImVwayI6eyJrdHkiOiJFQyIsImNydiI6IlAtMjU2IiwieCI6Ill0aDdLTUhUYzNFUUQwUHpnZ0FiN29fSDFadlFnQzFUOGdjMS1rZjFTanMiLCJ5IjoiQXZIeHF1T3RGZ1ZveHNYUHFjWGpfWjZhMDBDY0ZFMzJpRjdiY3hVZGFqdyJ9fQ..5pjvf-Iu4tII5jqf.5j3HuDUfDF4NryaG78Ib5Mpsp_bB4tfWiyffc07rzJZufR7bczu8PbNxpOCZGrTczdJR6I6nCfoe6uQRg7xw3D-4ARBVggs04bWhkt-QFLXMJ-k8_QLH6FER5ALUbw.cP7kgs48KkNoBPH6pn_YEA";
 
+    // ignore: unused_local_variable
     final header = """{
   "alg": "ECDH-ES",
   "typ": "JWT",
@@ -398,7 +399,7 @@ DwwoHgQL4BQ6fCuuc26m93ClRTrYqjo418x5fDMyvr7KWkIMwVU6xcWJNg==
     final secret = JsonWebKey.generateECDH('A256GCM',
         publicKey: publicKey, privateKey: privateKey);
 
-    print("payload ${secret}");
+    print("payload $secret");
 
     // should be: 86c7d0c862e836a999b537df8542ab91d5788514669edc9de916dd3f77d52a71ce9fa5e476205ee167a757523cc2c6813a9e4730e3b3b0c1588ff720425b3f6a4a
   });