diff --git a/README.md b/README.md
index a7cc8cc..3cc0d2d 100644
--- a/README.md
+++ b/README.md
@@ -26,8 +26,8 @@ main = launchAff' do
   log $ maybe "not found" id val
 
 
-onUpgradeNeeded :: forall e. Database -> Transaction -> Eff (idb :: IDB, exception :: EXCEPTION | e) Unit
-onUpgradeNeeded db _ = launchAff' do
+onUpgradeNeeded :: forall e. Database -> Transaction -> { oldVersion :: Int } -> Eff (idb :: IDB, exception :: EXCEPTION | e) Unit
+onUpgradeNeeded db _ _ = launchAff' do
   store <- IDBDatabase.createObjectStore db "store" IDBObjectStore.defaultParameters
   _     <- IDBObjectStore.add store "patate" (Just 1)
   _     <- IDBObjectStore.add store { property: 42 } (Just 2)
@@ -51,6 +51,10 @@ one.
 
 ## Changelog
 
+#### v3.0.0
+
+- callback to `onUpgradeNeeded` event now provide a record with the database old version.
+
 #### v2.0.0
 
 - review interface implementation (use of opaque classes to improve readability without compromising
diff --git a/bower.json b/bower.json
index 6bce378..fe712e4 100644
--- a/bower.json
+++ b/bower.json
@@ -1,7 +1,7 @@
 {
   "name": "purescript-indexeddb",
   "description": "An API wrapper around IndexedDB",
-  "version": "2.0.1",
+  "version": "3.0.0",
   "authors": [
     "Matthias Benkort <matthias.benkort@truqu.com>"
   ],
diff --git a/package.json b/package.json
index efb9254..6619bb9 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "purescript-indexeddb",
-  "version": "2.0.1",
+  "version": "3.0.0",
   "description": "A wrapper around the IndexedDB API",
   "scripts": {
     "prepare:release": "mkdir -p releases/github && cp -r README.md LICENSE src bower.json releases/github",