diff --git a/bindings/nodejs/lib/types/block/input/input.ts b/bindings/nodejs/lib/types/block/input/input.ts
index 551eb037c4..661d737be8 100644
--- a/bindings/nodejs/lib/types/block/input/input.ts
+++ b/bindings/nodejs/lib/types/block/input/input.ts
@@ -35,7 +35,7 @@ class TreasuryInput extends Input {
     /**
      * The milestone id of the input.
      */
-    readonly milestoneId: HexEncodedString;
+    milestoneId: HexEncodedString;
 
     constructor(milestoneId: HexEncodedString) {
         super(InputType.Treasury);
@@ -50,11 +50,11 @@ class UTXOInput extends Input {
     /**
      * The transaction Id.
      */
-    readonly transactionId: HexEncodedString;
+    transactionId: HexEncodedString;
     /**
      * The output index.
      */
-    readonly transactionOutputIndex: number;
+    transactionOutputIndex: number;
 
     constructor(
         transactionId: HexEncodedString,
diff --git a/bindings/nodejs/lib/types/block/payload/transaction/essence.ts b/bindings/nodejs/lib/types/block/payload/transaction/essence.ts
index c5e31a1820..66fe8b00d2 100644
--- a/bindings/nodejs/lib/types/block/payload/transaction/essence.ts
+++ b/bindings/nodejs/lib/types/block/payload/transaction/essence.ts
@@ -35,23 +35,23 @@ abstract class TransactionEssence {
  */
 class RegularTransactionEssence extends TransactionEssence {
     /// The unique value denoting whether the block was meant for mainnet, testnet, or a private network.
-    readonly networkId: number;
-    readonly inputsCommitment: HexEncodedString;
+    networkId: number;
+    inputsCommitment: HexEncodedString;
 
     @Type(() => Input, {
         discriminator: InputDiscriminator,
     })
-    readonly inputs: Input[];
+    inputs: Input[];
 
     @Type(() => Output, {
         discriminator: OutputDiscriminator,
     })
-    readonly outputs: Output[];
+    outputs: Output[];
 
     @Type(() => Payload, {
         discriminator: PayloadDiscriminator,
     })
-    readonly payload: Payload | undefined;
+    payload: Payload | undefined;
 
     constructor(
         networkId: number,