diff --git a/.fern/metadata.json b/.fern/metadata.json
index 79b62ef..b32890f 100644
--- a/.fern/metadata.json
+++ b/.fern/metadata.json
@@ -11,5 +11,5 @@
     "originGitCommitIsDirty": false,
     "invokedBy": "ci",
     "ciProvider": "github",
-    "sdkVersion": "3.0.2"
+    "sdkVersion": "4.0.0"
 }
diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index d6f5405..e6f8775 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "3.0.1"
+  ".": "4.0.0"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 47eb413..e86d97f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,16 @@
 # Changelog
 
+## [4.0.0](https://github.com/Speechify-AI/sdk-typescript/compare/3.0.1...4.0.0) (2026-08-19)
+
+
+### ⚠ BREAKING CHANGES
+
+* default API version is now `2026-09-13`.
+
+### Features
+
+* regenerate SDK for API 2026-09-13 with consent-challenge voice cloning ([#16](https://github.com/Speechify-AI/sdk-typescript/issues/16)) ([23a8e2f](https://github.com/Speechify-AI/sdk-typescript/commit/23a8e2fd1c53f3c8801bc4f14259fb60cf11330c))
+
 ## [3.0.1](https://github.com/SpeechifyInc/speechify-api-sdk-typescript/compare/3.0.0...3.0.1) (2026-07-10)
 
 
diff --git a/package.json b/package.json
index 0ab9286..beff59d 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@speechify/api",
-    "version": "3.0.2",
+    "version": "4.0.0",
     "private": false,
     "repository": {
         "type": "git",