diff --git a/Casks/g/gretl.rb b/Casks/g/gretl.rb
index cbdc08f5af..e419bde916 100644
--- a/Casks/g/gretl.rb
+++ b/Casks/g/gretl.rb
@@ -1,9 +1,9 @@
 cask "gretl" do
   arch arm: "arm64", intel: "intel"
 
-  version "2023b"
-  sha256 arm:   "46db09548782c5ed33b6bd18747b54475e955b69bae81be36c7de8c89eaeb65b",
-         intel: "307c0d6ae748c80f9a64f12c827523b6fd7ac32265cb94594afc8a5f45d71cda"
+  version "2023c"
+  sha256 arm:   "6e5f499a21cb2d1dfc356c165b95a92b87f55f7d9a43c50a848896fc8ecd661c",
+         intel: "ef4fefa3459bf6c02830c3f76a730acfc665c4f9ba7ce1190e34321ade922598"
 
   url "https://downloads.sourceforge.net/gretl/gretl-#{version}-macos-#{arch}.pkg"
   name "gretl"