diff --git a/Formula/m/micromamba.rb b/Formula/m/micromamba.rb
index 66a39a21ef29..edce9aeb458e 100644
--- a/Formula/m/micromamba.rb
+++ b/Formula/m/micromamba.rb
@@ -1,8 +1,8 @@
 class Micromamba < Formula
   desc "Fast Cross-Platform Package Manager"
   homepage "https://github.com/mamba-org/mamba"
-  url "https://github.com/mamba-org/mamba/archive/refs/tags/2.8.1.tar.gz"
-  sha256 "5f8f206ed5951e45dc3c9bf5aad80d38312d34d9fadc9cc00886e6ab93569e53"
+  url "https://github.com/mamba-org/mamba/archive/refs/tags/2.9.0.tar.gz"
+  sha256 "57befdcc985b07f95d1a495569ac249a270c71167d111374ff08443154821e1d"
   license "BSD-3-Clause"
   head "https://github.com/mamba-org/mamba.git", branch: "main"