diff --git a/CHANGELOG.md b/CHANGELOG.md
index 42e2e95..072a35b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,26 @@
+# [3.1.0](https://github.com/ngx-rocket/scripts/compare/3.0.4...3.1.0) (2021-01-08)
+
+
+### Bug Fixes
+
+* changed env's default export to named export ([691f10c](https://github.com/ngx-rocket/scripts/commit/691f10c5ad2d3dc53e465c02045910e6642e8838))
+* make env handle null with noImplicitAny  ([fc4a71d](https://github.com/ngx-rocket/scripts/commit/fc4a71de8daff044566fff7bd7b532cd4acbd347))
+
+
+### chore
+
+* update dependencies ([d633edd](https://github.com/ngx-rocket/scripts/commit/d633eddeb96b8625877c561bc87609178f093476))
+
+
+### Features
+
+* add --app option (closes [#18](https://github.com/ngx-rocket/scripts/issues/18)) ([77e951d](https://github.com/ngx-rocket/scripts/commit/77e951dc49ed897866a61d9bb51759356e0a2f4a))
+
+
+### BREAKING CHANGES
+
+* requires Node.js version >= 10.0.0
+
 # 4.0.0
 - BREAKING CHANGE: requires Node.js version >= 8.0.0
 - BREAKING CHANGE: `env` command now generates an explicit export instead of a default export
@@ -47,4 +70,4 @@
 - Fixed `cordova` commands on Windows (https://github.com/ngx-rocket/generator-ngx-rocket/issues/117)
 
 # 1.0.0
-- Initial release
\ No newline at end of file
+- Initial release
diff --git a/package-lock.json b/package-lock.json
index e1d5af9..c6fc108 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "@ngx-rocket/scripts",
-  "version": "4.0.0",
+  "version": "3.1.0",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
diff --git a/package.json b/package.json
index 89f0371..cf6753c 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@ngx-rocket/scripts",
-  "version": "4.0.0",
+  "version": "3.1.0",
   "description": "Support scripts for ngX-Rocket projects",
   "repository": "ngx-rocket/scripts",
   "main": "index.js",