diff --git a/packages/encryption/lib/platform_encryption.dart b/packages/encryption/lib/platform_encryption.dart
index 3b4628c..16575bf 100644
--- a/packages/encryption/lib/platform_encryption.dart
+++ b/packages/encryption/lib/platform_encryption.dart
@@ -1,3 +1,4 @@
 library platform_encryption;
 
 export 'src/encrypter.dart';
+export 'src/missing_app_key_exception.dart';
diff --git a/packages/encryption/lib/src/exceptions/missing_app_key_exception.dart b/packages/encryption/lib/src/missing_app_key_exception.dart
similarity index 100%
rename from packages/encryption/lib/src/exceptions/missing_app_key_exception.dart
rename to packages/encryption/lib/src/missing_app_key_exception.dart
diff --git a/packages/encryption/pubspec.yaml b/packages/encryption/pubspec.yaml
index 9184ea5..ceb25c9 100644
--- a/packages/encryption/pubspec.yaml
+++ b/packages/encryption/pubspec.yaml
@@ -10,6 +10,7 @@ environment:
 
 # Add regular dependencies here.
 dependencies:
+  crypto: ^3.0.6
   encrypt: ^5.0.3
   platform_contracts: ^8.0.0