diff --git a/Formula/i/insect.rb b/Formula/i/insect.rb
index 528a680ab261a..d1e5467c34eaa 100644
--- a/Formula/i/insect.rb
+++ b/Formula/i/insect.rb
@@ -17,6 +17,10 @@ class Insect < Formula
     sha256 cellar: :any_skip_relocation, x86_64_linux:   "8988d5e206cae71f827f36d7085acc298f39c3d30c92abda00610f3e01151dac"
   end
 
+  # deprecated in favor of `numbat` formula, https://github.com/sharkdp/insect/commit/6c7dea10a491b55250acede0bd740e72177d8945
+  # see https://github.com/sharkdp/numbat/blob/master/assets/reasons-for-rewriting-in-rust.md
+  deprecate! date: "2024-12-28", because: "use `numbat` formula instead"
+
   depends_on "node"
 
   on_linux do