diff --git a/Formula/macaulay2.rb b/Formula/macaulay2.rb
index cf67842..b8ecebd 100644
--- a/Formula/macaulay2.rb
+++ b/Formula/macaulay2.rb
@@ -2,12 +2,11 @@ class Macaulay2 < Formula
   @name = "M2"
   desc "Software system for algebraic geometry research"
   homepage "http://macaulay2.com"
-  url "https://github.com/Macaulay2/M2/archive/refs/tags/release-1.23.tar.gz"
-  sha256 "306e3bf24514e9733a03ff8e24127b41b91fa7e593ed520651c892538c04344b"
+  url "https://github.com/Macaulay2/M2/archive/refs/heads/development.tar.gz"
+  version "1.24.05-rc1"
+  sha256 "25e9455814d8f73ef216561d8b31852e48d1a149a3d928ae0a8ef7668e8dc931"
   license any_of: ["GPL-2.0-only", "GPL-3.0-only"]
 
-  head "https://github.com/Macaulay2/M2/archive/refs/heads/development.tar.gz"
-
   bottle do
     root_url "https://ghcr.io/v2/macaulay2/tap"
     sha256 cellar: :any, arm64_sonoma: "2de324956110d5c1dea1a6693fa9dfe22e45d5900093b5086983afb0468470ef"