diff --git a/src/psbt.js b/src/psbt.js
index a3ee29b..af7aa3d 100644
--- a/src/psbt.js
+++ b/src/psbt.js
@@ -100,9 +100,15 @@ class Psbt {
   get version() {
     return this.__CACHE.__TX.version;
   }
+  set version(version) {
+    this.setVersion(version);
+  }
   get locktime() {
     return this.__CACHE.__TX.locktime;
   }
+  set locktime(locktime) {
+    this.setLocktime(locktime);
+  }
   get inputs() {
     return this.__CACHE.__TX.ins.map(input => ({
       hash: bufferutils_1.cloneBuffer(input.hash),
diff --git a/ts_src/psbt.ts b/ts_src/psbt.ts
index 0fd177b..2395190 100644
--- a/ts_src/psbt.ts
+++ b/ts_src/psbt.ts
@@ -133,10 +133,18 @@ export class Psbt {
     return this.__CACHE.__TX.version;
   }
 
+  set version(version: number) {
+    this.setVersion(version);
+  }
+
   get locktime(): number {
     return this.__CACHE.__TX.locktime;
   }
 
+  set locktime(locktime: number) {
+    this.setLocktime(locktime);
+  }
+
   get inputs(): Input[] {
     return this.__CACHE.__TX.ins.map(input => ({
       hash: cloneBuffer(input.hash),
diff --git a/types/psbt.d.ts b/types/psbt.d.ts
index a2c5501..b48d828 100644
--- a/types/psbt.d.ts
+++ b/types/psbt.d.ts
@@ -44,8 +44,8 @@ export declare class Psbt {
     private opts;
     constructor(opts?: PsbtOptsOptional, data?: PsbtBase);
     readonly inputCount: number;
-    readonly version: number;
-    readonly locktime: number;
+    version: number;
+    locktime: number;
     readonly inputs: Input[];
     readonly outputs: Output[];
     combine(...those: Psbt[]): this;