diff --git a/lib/lago/api/resources/wallet.rb b/lib/lago/api/resources/wallet.rb
index eb5d175..d2881b8 100644
--- a/lib/lago/api/resources/wallet.rb
+++ b/lib/lago/api/resources/wallet.rb
@@ -21,6 +21,7 @@ def whitelist_params(params)
             granted_credits: params[:granted_credits],
             currency: params[:currency],
             expiration_at: params[:expiration_at],
+            transaction_metadata: params[:transaction_metadata],
             invoice_requires_successful_payment: params[:invoice_requires_successful_payment],
           }.compact
 
@@ -45,6 +46,7 @@ def whitelist_recurring_rules(rules)
               :method,
               :started_at,
               :target_ongoing_balance,
+              :transaction_metadata
             )
 
             processed_rules << result unless result.empty?
diff --git a/lib/lago/api/resources/wallet_transaction.rb b/lib/lago/api/resources/wallet_transaction.rb
index 78fd52f..ce838c9 100644
--- a/lib/lago/api/resources/wallet_transaction.rb
+++ b/lib/lago/api/resources/wallet_transaction.rb
@@ -27,6 +27,7 @@ def whitelist_params(params)
               granted_credits: params[:granted_credits],
               voided_credits: params[:voided_credits],
               invoice_requires_successful_payment: params[:invoice_requires_successful_payment],
+              metadata: params[:metadata],
             }.compact
           }
         end