diff --git a/lib/coap.dart b/lib/coap.dart
index 45c5f36e..3de392ff 100644
--- a/lib/coap.dart
+++ b/lib/coap.dart
@@ -7,6 +7,9 @@
 
 library coap;
 
+export 'package:dtls2/dtls2.dart'
+    show Certificate, PemCertificate, DerCertificate;
+
 /// Pre-defined configs
 export 'config/coap_config_all.dart';
 export 'config/coap_config_default.dart';
diff --git a/lib/src/coap_config.dart b/lib/src/coap_config.dart
index 4a010e80..518f8bc5 100644
--- a/lib/src/coap_config.dart
+++ b/lib/src/coap_config.dart
@@ -7,6 +7,7 @@
 
 import 'dart:typed_data';
 import 'dart:ffi';
+import 'package:dtls2/dtls2.dart';
 
 import 'coap_constants.dart';
 import 'deduplication/deduplicator_factory.dart';
@@ -79,7 +80,7 @@ abstract class DefaultCoapConfig {
   bool get dtlsWithTrustedRoots => true;
 
   /// List of custom root certificates to use with OpenSSL.
-  List<Uint8List> get rootCertificates => const [];
+  List<Certificate> get rootCertificates => const [];
 
   /// Can be used to specify the Ciphers that should be used by OpenSSL.
   String? get dtlsCiphers => null;
diff --git a/lib/src/network/coap_network_openssl.dart b/lib/src/network/coap_network_openssl.dart
index d3edfe81..e76038bc 100644
--- a/lib/src/network/coap_network_openssl.dart
+++ b/lib/src/network/coap_network_openssl.dart
@@ -58,7 +58,7 @@ class CoapNetworkUDPOpenSSL extends CoapNetworkUDP {
     super.bindAddress, {
     required final bool verify,
     required final bool withTrustedRoots,
-    required final List<Uint8List> rootCertificates,
+    required final List<Certificate> rootCertificates,
     super.namespace,
     final String? ciphers,
     final internal.PskCredentialsCallback? pskCredentialsCallback,
@@ -78,7 +78,7 @@ class CoapNetworkUDPOpenSSL extends CoapNetworkUDP {
 
   DtlsConnection? _dtlsConnection;
 
-  final List<Uint8List> _rootCertificates;
+  final List<Certificate> _rootCertificates;
 
   final bool _verify;
 
diff --git a/pubspec.yaml b/pubspec.yaml
index 5d50b440..f60d5b96 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -14,7 +14,7 @@ dependencies:
   build: ^2.4.1
   collection: ^1.18.0
   convert: ^3.1.1
-  dtls2: ^0.17.0
+  dtls2: ^0.18.0
   event_bus: ^2.0.0
   meta: ^1.12.0
   path: ^1.9.0