diff --git a/package-lock.json b/package-lock.json
index 28899316e..35f861ba5 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "EDRLab.ThoriumReader",
-  "version": "2.0.0",
+  "version": "2.1.0-alpha.1",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "EDRLab.ThoriumReader",
-      "version": "2.0.0",
+      "version": "2.1.0-alpha.1",
       "hasInstallScript": true,
       "license": "BSD-3-Clause",
       "dependencies": {
diff --git a/package.json b/package.json
index c065eb12e..9c1cae9e2 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "EDRLab.ThoriumReader",
-  "version": "2.0.0",
+  "version": "2.1.0-alpha.1",
   "description": "Desktop application to read ebooks",
   "keywords": [
     "readium",
diff --git a/src/package.json b/src/package.json
index 6eb55695e..901b35798 100644
--- a/src/package.json
+++ b/src/package.json
@@ -1,6 +1,6 @@
 {
   "name": "EDRLab.ThoriumReader",
-  "version": "2.0.0",
+  "version": "2.1.0-alpha.1",
   "description": "Desktop application to read ebooks",
   "keywords": [
     "readium",