diff --git a/Casks/onepassword-beta.rb b/Casks/onepassword-beta.rb
index d167748d1..bd40bde1d 100644
--- a/Casks/onepassword-beta.rb
+++ b/Casks/onepassword-beta.rb
@@ -1,7 +1,7 @@
 class OnepasswordBeta < Cask
-  url 'https://aws.cachefly.net/dist/1P/mac4/1Password-4.3.1.BETA-7.zip'
+  url 'https://aws.cachefly.net/dist/1P/mac4/1Password-4.5.BETA-12.zip'
   homepage 'https://agilebits.com/onepassword'
-  version '4.3.1.BETA-7'
-  sha256 '350e60b2998812c1ea19e8959a7b9b615547011699a83f7295af37d8a3c85bbb'
+  version '4.5.BETA-12'
+  sha256 'e112100ff55f30f44c80b4153e56ef5f9916df4d1fe170b5952a80856b93690c'
   link '1Password 4.app'
 end