diff --git a/types/coinbase/index.d.ts b/types/coinbase/index.d.ts
index 82fc32a7d3..891361627f 100644
--- a/types/coinbase/index.d.ts
+++ b/types/coinbase/index.d.ts
@@ -878,7 +878,7 @@ export class Buy implements Resource {
     /**
      * Associated transaction (e.g. a bank, fiat account)
      */
-    transaction: ResourceRef;
+    transaction: ResourceRef | null;
 
     /**
      * Amount in bitcoin, litecoin or ethereum
@@ -896,7 +896,7 @@ export class Buy implements Resource {
     subtotal: MoneyHash;
 
     /**
-     * Fee associated to this buy
+     * Fees associated to this buy
      */
     fees: Fee[];
 
@@ -935,6 +935,26 @@ export class Buy implements Resource {
      */
     requires_completion_step: boolean;
 
+    /**
+     * Transfer identifier
+     */
+    id: string;
+
+    /**
+     * Reference code shown in user's dashboard.
+     */
+    user_reference: string;
+
+    /**
+     * ISO timestamp
+     */
+    created_at: string;
+
+    /**
+     * ISO timestamp
+     */
+    updated_at: string;
+
     /**
      * Completes a buy that is created in commit: false state.
      * If the exchange rate has changed since the buy was created, this call will fail with the error “The exchange rate updated while you
@@ -995,7 +1015,7 @@ export class Sell implements Resource {
     /**
      * Associated transaction (e.g. a bank, fiat account)
      */
-    transaction: ResourceRef;
+    transaction: ResourceRef | null;
 
     /**
      * Amount in bitcoin, litecoin or ethereum
@@ -1013,9 +1033,9 @@ export class Sell implements Resource {
     subtotal: MoneyHash;
 
     /**
-     * Fee associated to this sell
+     * Fees associated to this sell
      */
-    fee: MoneyHash;
+    fees: MoneyHash[];
 
     /**
      * Has this sell been committed?
@@ -1032,6 +1052,26 @@ export class Sell implements Resource {
      */
     payout_at?: string;
 
+    /**
+     * Transfer identifier
+     */
+    id: string;
+
+    /**
+     * Reference code shown in user's dashboard.
+     */
+    user_reference: string;
+
+    /**
+     * ISO timestamp
+     */
+    created_at: string;
+
+    /**
+     * ISO timestamp
+     */
+    updated_at: string;
+
     /**
      * Completes a sell that is created in commit: false state.
      * If the exchange rate has changed since the sell was created, this call will fail with the error “The exchange rate updated while you