diff --git a/Casks/thunderbird-ru.rb b/Casks/thunderbird-ru.rb
index 0bcc3f93d..7372f280a 100644
--- a/Casks/thunderbird-ru.rb
+++ b/Casks/thunderbird-ru.rb
@@ -1,6 +1,6 @@
 cask 'thunderbird-ru' do
-  version '45.2.0'
-  sha256 '914ecf32651a1d04aa67f8218d4c98383ad7d198eb35d78984966c7ef814dee0'
+  version '45.3.0'
+  sha256 'a6f7da29d250085589ad2a3318f4035ddc29c1c4a5d219a09fbe38b6050bcf4e'
 
   url "https://download.mozilla.org/?product=thunderbird-#{version}&os=osx&lang=ru"
   name 'Mozilla Thunderbird'