diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index a51a25af..93396555 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "0.138.0"
+  ".": "0.139.0"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2abfdbd9..a9dfc4ca 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [0.139.0](https://github.com/kernel/kernel-node-sdk/compare/v0.138.0...v0.139.0) (2026-10-30)
+
+
+### Features
+
+* Expose leased_at on browser session responses ([c01f102](https://github.com/kernel/kernel-node-sdk/commit/c01f102ca3ee5e8a0473bdbb29aaa681fc0c5e2e))
+
 ## [0.138.0](https://github.com/kernel/kernel-node-sdk/compare/v0.137.0...v0.138.0) (2026-10-30)
 
 
diff --git a/package.json b/package.json
index 94f0bdbf..a333ae66 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@onkernel/sdk",
-  "version": "0.138.0",
+  "version": "0.139.0",
   "description": "The official TypeScript library for the Kernel API",
   "author": "Kernel <>",
   "types": "dist/index.d.ts",
diff --git a/src/resources/browser-pools.ts b/src/resources/browser-pools.ts
index cacd2bc5..97fec043 100644
--- a/src/resources/browser-pools.ts
+++ b/src/resources/browser-pools.ts
@@ -443,6 +443,12 @@ export interface BrowserPoolAcquireResponse {
    */
   kiosk_mode?: boolean;
 
+  /**
+   * When the pooled browser session was last leased. Only present for leased pooled
+   * sessions.
+   */
+  leased_at?: string;
+
   /**
    * Effective browser timezone and locale with per-field provenance.
    */
diff --git a/src/resources/browsers/browsers.ts b/src/resources/browsers/browsers.ts
index 0dcb82c6..ed8938f7 100644
--- a/src/resources/browsers/browsers.ts
+++ b/src/resources/browsers/browsers.ts
@@ -984,6 +984,12 @@ export interface BrowserCreateResponse {
    */
   kiosk_mode?: boolean;
 
+  /**
+   * When the pooled browser session was last leased. Only present for leased pooled
+   * sessions.
+   */
+  leased_at?: string;
+
   /**
    * Effective browser timezone and locale with per-field provenance.
    */
@@ -1165,6 +1171,12 @@ export interface BrowserRetrieveResponse {
    */
   kiosk_mode?: boolean;
 
+  /**
+   * When the pooled browser session was last leased. Only present for leased pooled
+   * sessions.
+   */
+  leased_at?: string;
+
   /**
    * Effective browser timezone and locale with per-field provenance.
    */
@@ -1346,6 +1358,12 @@ export interface BrowserUpdateResponse {
    */
   kiosk_mode?: boolean;
 
+  /**
+   * When the pooled browser session was last leased. Only present for leased pooled
+   * sessions.
+   */
+  leased_at?: string;
+
   /**
    * Effective browser timezone and locale with per-field provenance.
    */
@@ -1527,6 +1545,12 @@ export interface BrowserListResponse {
    */
   kiosk_mode?: boolean;
 
+  /**
+   * When the pooled browser session was last leased. Only present for leased pooled
+   * sessions.
+   */
+  leased_at?: string;
+
   /**
    * Effective browser timezone and locale with per-field provenance.
    */
diff --git a/src/resources/invocations.ts b/src/resources/invocations.ts
index f13b2596..d62e152d 100644
--- a/src/resources/invocations.ts
+++ b/src/resources/invocations.ts
@@ -527,6 +527,12 @@ export namespace InvocationListBrowsersResponse {
      */
     kiosk_mode?: boolean;
 
+    /**
+     * When the pooled browser session was last leased. Only present for leased pooled
+     * sessions.
+     */
+    leased_at?: string;
+
     /**
      * Effective browser timezone and locale with per-field provenance.
      */
diff --git a/src/version.ts b/src/version.ts
index 26aad63c..d8122e8a 100644
--- a/src/version.ts
+++ b/src/version.ts
@@ -1 +1 @@
-export const VERSION = '0.138.0'; // x-release-please-version
+export const VERSION = '0.139.0'; // x-release-please-version