diff --git a/.projen/tasks.json b/.projen/tasks.json
index 5035610..5a0542e 100644
--- a/.projen/tasks.json
+++ b/.projen/tasks.json
@@ -193,7 +193,8 @@
       "name": "release",
       "description": "Prepare a release from \"main\" branch",
       "env": {
-        "RELEASE": "true"
+        "RELEASE": "true",
+        "MAJOR": "1"
       },
       "steps": [
         {
diff --git a/.projenrc.ts b/.projenrc.ts
index 922adb9..bcbb23b 100644
--- a/.projenrc.ts
+++ b/.projenrc.ts
@@ -1,6 +1,7 @@
 import { awscdk } from 'projen';
 const project = new awscdk.AwsCdkConstructLibrary({
   author: 'Sentia MPC',
+  majorVersion: 1,
   authorAddress: 'support.mpc@sentia.com',
   cdkVersion: '2.37.1',
   defaultReleaseBranch: 'main',