diff --git a/.golangci.yml b/.golangci.yml
index 7c63af7..c7fe16f 100644
--- a/.golangci.yml
+++ b/.golangci.yml
@@ -163,6 +163,7 @@ linters:
     - nlreturn
     - nolintlint
     - nosnakecase
+    - perfsprint
     - promlinter
     - rowserrcheck
     - scopelint
diff --git a/mock/service.go b/mock/service.go
index 80fea1d..82a5dcc 100644
--- a/mock/service.go
+++ b/mock/service.go
@@ -99,8 +99,8 @@ func (s *Service) TransactionInBlock(_ context.Context, _ types.Hash, _ uint32)
 }
 
 // TransactionReceipt returns the transaction receipt for the given transaction hash.
-func (s *Service) TransactionReceipt(_ context.Context, _ types.Hash) (*spec.BerlinTransactionReceipt, error) {
-	return &spec.BerlinTransactionReceipt{}, nil
+func (s *Service) TransactionReceipt(_ context.Context, _ types.Hash) (*spec.TransactionReceipt, error) {
+	return &spec.TransactionReceipt{}, nil
 }
 
 // Call makes a call to the execution client.