diff --git a/package-lock.json b/package-lock.json
index cb2385f1..b49fad82 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "token-bridge-contracts",
-  "version": "4.1.1",
+  "version": "5.0.0-rc0",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/package.json b/package.json
index cf663b8d..4dd60c61 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "token-bridge-contracts",
-  "version": "4.1.1",
+  "version": "5.0.0-rc0",
   "description": "Bridge",
   "main": "index.js",
   "scripts": {