diff --git a/README.md b/README.md
index d948e4b..fa54ec8 100644
--- a/README.md
+++ b/README.md
@@ -22,6 +22,11 @@ The `nixpkgs` `nvim-treesitter` plugin is not well equipped to handle the migrat
 
 **nvim-treesitter-main** is a flake that builds the new `main` branch `nvim-treesitter`, along with all of the parser versions from the [`parsers.lua`](https://github.com/nvim-treesitter/nvim-treesitter/blob/main/lua/nvim-treesitter/parsers.lua) file, as recommended by the project.
 
+## Deprecation
+The `nvim-treesitter` main branch was merged into [nixpkgs](https://github.com/NixOS/nixpkgs/pull/470883) in late 2025.
+
+This flake will stay maintained (new grammar versions) in the medium-term, but you should look to move to the nixpkgs version - it's far simpler and more correct.
+
 ## Usage
 
 ** See below if you also plan to install tree-sitter grammars **
diff --git a/overlay.nix b/overlay.nix
index 2b4342b..7c92c46 100644
--- a/overlay.nix
+++ b/overlay.nix
@@ -109,7 +109,7 @@ in
           nvimSkipModules = [ "nvim-treesitter._meta.parsers" ];
         })
       );
-      nvim-treesitter = nvim-treesitter-unwrapped;
+      nvim-treesitter = lib.warn "The nvim-treesitter-main flake is deprecated; consider moving to the nvim-treesitter package provided by nixpkgs unstable." nvim-treesitter-unwrapped;
 
       nvim-treesitter-textobjects = prev'.nvim-treesitter-textobjects.overrideAttrs (old: {
         version = inputs.nvim-treesitter-textobjects.rev;