diff --git a/ethpm.json b/ethpm.json
index 50bac08e1..623339a11 100644
--- a/ethpm.json
+++ b/ethpm.json
@@ -1,6 +1,6 @@
 {
   "package_name": "zeppelin",
-  "version": "1.11.0",
+  "version": "1.12.0-rc.1",
   "description": "Secure Smart Contract library for Solidity",
   "authors": [
     "Manuel Araoz <manuelaraoz@gmail.com>"
diff --git a/package-lock.json b/package-lock.json
index f19b042aa..2588cb0eb 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "openzeppelin-solidity",
-  "version": "1.11.0",
+  "version": "1.12.0-rc.1",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/package.json b/package.json
index b986eb703..af0e6fb1d 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "openzeppelin-solidity",
-  "version": "1.11.0",
+  "version": "1.12.0-rc.1",
   "description": "Secure Smart Contract library for Solidity",
   "files": [
     "contracts",