diff --git a/lerna.json b/lerna.json
index 6a3fd7a..039556d 100644
--- a/lerna.json
+++ b/lerna.json
@@ -3,5 +3,5 @@
   "packages": [
     "packages/*"
   ],
-  "version": "2.0.0"
+  "version": "2.0.0-pre"
 }
diff --git a/package.json b/package.json
index c72c6df..e0bf053 100644
--- a/package.json
+++ b/package.json
@@ -2,7 +2,7 @@
   "name": "firmata-monorepo",
   "description": "Firmata protocol implementation for programmatic interaction with Arduino and Arduino compatible development boards.",
   "private": true,
-  "version": "2.0.0",
+  "version": "2.0.0-pre",
   "author": "Julian Gautier",
   "license": "MIT",
   "homepage": "http://www.github.com/firmata/firmata.js",
diff --git a/packages/firmata-io/package.json b/packages/firmata-io/package.json
index 21a0859..c645b61 100644
--- a/packages/firmata-io/package.json
+++ b/packages/firmata-io/package.json
@@ -1,7 +1,7 @@
 {
   "name": "firmata-io",
   "description": "Firmata protocol implementation",
-  "version": "2.0.0",
+  "version": "2.0.0-pre",
   "author": "Julian Gautier",
   "license": "MIT",
   "homepage": "http://www.github.com/firmata/firmata.js",
diff --git a/packages/firmata.js/package.json b/packages/firmata.js/package.json
index 8513ca5..c296549 100644
--- a/packages/firmata.js/package.json
+++ b/packages/firmata.js/package.json
@@ -1,7 +1,7 @@
 {
   "name": "firmata",
   "description": "Firmata protocol implementation for programmatic interaction with Arduino and Arduino compatible development boards. Includes Serialport",
-  "version": "2.0.0",
+  "version": "2.0.0-pre",
   "author": "Julian Gautier",
   "license": "MIT",
   "homepage": "http://www.github.com/firmata/firmata.js",