diff --git a/Casks/r/readdle-spark.rb b/Casks/r/readdle-spark.rb
index 9c3745751f..2fcb2eceba 100644
--- a/Casks/r/readdle-spark.rb
+++ b/Casks/r/readdle-spark.rb
@@ -1,6 +1,6 @@
 cask "readdle-spark" do
-  version "3.13.2.65826"
-  sha256 "1bc30a4436e047af6f01aba1faabef82b3b3350923ce50bbaf4e2d9fb50d1557"
+  version "3.13.4.66401"
+  sha256 "2e8afd7c7ea24a9ea9bce7b7d8d5cd1f62da8b429c1a9874deb06e4ca67a5e35"
 
   url "https://downloads.sparkmailapp.com/Spark#{version.major}/mac/dist/#{version}/Spark.zip"
   name "Spark"