diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2e7f37a..e208902 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,7 @@
 ## 3.2.3-wip
 
 * Add const constructor to `GrpcError` fixing #606.
+* Make `GrpcError` non-final to allow implementations.
 
 ## 3.2.2
 
diff --git a/lib/src/shared/status.dart b/lib/src/shared/status.dart
index 5ab3a05..43e7ea8 100644
--- a/lib/src/shared/status.dart
+++ b/lib/src/shared/status.dart
@@ -151,7 +151,7 @@ class StatusCode {
   }
 }
 
-final class GrpcError implements Exception {
+class GrpcError implements Exception {
   final int code;
   final String? message;
   final Object? rawResponse;