diff --git a/package-lock.json b/package-lock.json
index 430b15b4..743935a1 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@elrondnetwork/erdjs",
-  "version": "11.0.0",
+  "version": "12.0.0-alpha.0",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "@elrondnetwork/erdjs",
-      "version": "11.0.0",
+      "version": "12.0.0-alpha.0",
       "license": "MIT",
       "dependencies": {
         "@elrondnetwork/transaction-decoder": "1.0.0",
diff --git a/package.json b/package.json
index 146ff5ec..aa7b1f67 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@elrondnetwork/erdjs",
-  "version": "12.0.0",
+  "version": "12.0.0-alpha.0",
   "description": "Smart Contracts interaction framework",
   "main": "out/index.js",
   "types": "out/index.d.js",