diff --git a/Adjust.podspec b/Adjust.podspec
index 31e40b7c3..6684a7790 100644
--- a/Adjust.podspec
+++ b/Adjust.podspec
@@ -1,11 +1,11 @@
 Pod::Spec.new do |s|
   s.name           = "Adjust"
-  s.version        = "3.4.0"
+  s.version        = "4.0.0"
   s.summary        = "This is the iOS SDK of adjust. You can read more about it at http://adjust.com."
   s.homepage       = "http://adjust.com"
   s.license        = { :type => 'MIT', :file => 'MIT-LICENSE' }
   s.author         = { "Christian Wellenbrock" => "welle@adjust.com" }
-  s.source         = { :git => "https://github.com/adjust/ios_sdk.git", :tag => "v3.4.0" }
+  s.source         = { :git => "https://github.com/adjust/ios_sdk.git", :tag => "v4.0.0" }
   s.platform       = :ios, '4.3'
   s.framework      = 'SystemConfiguration'
   s.weak_framework = 'AdSupport', 'iAd'
diff --git a/VERSION b/VERSION
index 18091983f..fcdb2e109 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-3.4.0
+4.0.0