diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 5fab33b..73d3293 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-    ".": "1.3.3"
+    ".": "1.4.0"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9a10185..ab75e32 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [1.4.0](https://github.com/postalsys/ee-client/compare/v1.3.3...v1.4.0) (2026-07-02)
+
+
+### Features
+
+* harden client lifecycle, folder-tree rendering, and error paths ([d196ff0](https://github.com/postalsys/ee-client/commit/d196ff02ed751d5777863b8a0819a7993609c0b3))
+
 ## [1.3.3](https://github.com/postalsys/ee-client/compare/v1.3.2...v1.3.3) (2026-07-02)
 
 
diff --git a/package-lock.json b/package-lock.json
index 0c2fa1f..9e9c62f 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
     "name": "@postalsys/ee-client",
-    "version": "1.3.3",
+    "version": "1.4.0",
     "lockfileVersion": 3,
     "requires": true,
     "packages": {
         "": {
             "name": "@postalsys/ee-client",
-            "version": "1.3.3",
+            "version": "1.4.0",
             "license": "MIT",
             "devDependencies": {
                 "eslint": "^8.57.0",
diff --git a/package.json b/package.json
index a2c0524..0855daf 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@postalsys/ee-client",
-    "version": "1.3.3",
+    "version": "1.4.0",
     "description": "EmailEngine client library for browser and Node.js applications",
     "main": "index.js",
     "module": "index.js",