diff --git a/ethpm.json b/ethpm.json
index a60b4a603..c53270424 100644
--- a/ethpm.json
+++ b/ethpm.json
@@ -1,6 +1,6 @@
 {
   "package_name": "zeppelin",
-  "version": "2.0.0",
+  "version": "2.1.0-rc.1",
   "description": "Secure Smart Contract library for Solidity",
   "authors": [
     "OpenZeppelin Community <maintainers@openzeppelin.org>"
diff --git a/package-lock.json b/package-lock.json
index b5ce5da27..16511c717 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "openzeppelin-solidity",
-  "version": "2.0.0",
+  "version": "2.1.0-rc.1",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/package.json b/package.json
index f4b6b0fbc..fc57658c7 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "openzeppelin-solidity",
-  "version": "2.0.0",
+  "version": "2.1.0-rc.1",
   "description": "Secure Smart Contract library for Solidity",
   "files": [
     "build",