diff --git a/packages/cli/package.json b/packages/cli/package.json
index 41eb8a59e..5c4c5fb5f 100644
--- a/packages/cli/package.json
+++ b/packages/cli/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@alephium/cli",
-  "version": "1.2.0",
+  "version": "1.2.1-rc.0",
   "description": "Alephium command line tool",
   "license": "GPL",
   "repository": {
diff --git a/packages/get-extension-wallet/package.json b/packages/get-extension-wallet/package.json
index 1ae798cb2..6543902dd 100644
--- a/packages/get-extension-wallet/package.json
+++ b/packages/get-extension-wallet/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@alephium/get-extension-wallet",
-  "version": "1.2.0",
+  "version": "1.2.1-rc.0",
   "main": "./dist/index.js",
   "types": "./dist/index.d.ts",
   "exports": {
diff --git a/packages/walletconnect/package.json b/packages/walletconnect/package.json
index 6d3edad83..106ed40f2 100644
--- a/packages/walletconnect/package.json
+++ b/packages/walletconnect/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@alephium/walletconnect-provider",
   "description": "Alephium Provider for WalletConnect Protocol",
-  "version": "1.2.0",
+  "version": "1.2.1-rc.0",
   "author": "Alephium dev",
   "homepage": "https://github.com/alephium/walletconnect",
   "repository": {
diff --git a/packages/web3-react/package.json b/packages/web3-react/package.json
index 320d7e48a..bd949668d 100644
--- a/packages/web3-react/package.json
+++ b/packages/web3-react/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@alephium/web3-react",
-  "version": "1.2.0",
+  "version": "1.2.1-rc.0",
   "homepage": "https://github.com/alephium/alephium-web3-react",
   "license": "GPL",
   "description": "React components for Alephium Web3.",
diff --git a/packages/web3-test/package.json b/packages/web3-test/package.json
index 6bbbd1102..b7f1f9e6e 100644
--- a/packages/web3-test/package.json
+++ b/packages/web3-test/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@alephium/web3-test",
-  "version": "1.2.0",
+  "version": "1.2.1-rc.0",
   "description": "Utility functions for Alephium test",
   "keywords": [
     "alephium",
diff --git a/packages/web3-wallet/package.json b/packages/web3-wallet/package.json
index 7701f6612..fa507068e 100644
--- a/packages/web3-wallet/package.json
+++ b/packages/web3-wallet/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@alephium/web3-wallet",
-  "version": "1.2.0",
+  "version": "1.2.1-rc.0",
   "description": "Simple wallets for Alephium",
   "keywords": [
     "alephium",
diff --git a/packages/web3/package.json b/packages/web3/package.json
index 936128041..70ee279ee 100644
--- a/packages/web3/package.json
+++ b/packages/web3/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@alephium/web3",
-  "version": "1.2.0",
+  "version": "1.2.1-rc.0",
   "description": "A JS/TS library to interact with the Alephium platform",
   "license": "GPL",
   "main": "dist/src/index.js",