diff --git a/emacs/emacs.org b/emacs/emacs.org
index c1c85b9..a53cec1 100644
--- a/emacs/emacs.org
+++ b/emacs/emacs.org
@@ -362,7 +362,10 @@ from https://vickychijwani.me/nuggets-from-my-emacs-part-i/
 #+BEGIN_SRC emacs-lisp
   (use-package company
     :diminish
-  :hook (after-init . global-company-mode))
+  :hook (after-init . global-company-mode)
+  :config
+  ;; use copilot
+  (delq 'company-preview-if-just-one-frontend company-frontends))
 #+END_SRC
 ** Indentation
 #+BEGIN_SRC emacs-lisp
@@ -370,7 +373,11 @@ from https://vickychijwani.me/nuggets-from-my-emacs-part-i/
   (setq-default tab-width 2) ; or any other preferred value
   (defvaralias 'c-basic-offset 'tab-width)
   (defvaralias 'cperl-indent-level 'tab-width)
-  (define-key prog-mode-map (kbd "<tab>") #'company-indent-or-complete-common)
+(defun yorick/copilot-tab (arg)
+  (interactive "P")
+  (or (copilot-accept-completion)
+      (company-indent-or-complete-common arg)))
+  (define-key prog-mode-map (kbd "<tab>") #'yorick/copilot-tab)
 #+END_SRC
 ** smart home key
 #+BEGIN_SRC emacs-lisp
@@ -475,6 +482,13 @@ from [[https://www.emacswiki.org/emacs/BackupDirectory][emacs wiki]]
 
 #+RESULTS:
 
+** copilot
+#+BEGIN_SRC emacs-lisp
+(use-package copilot
+  :commands (copilot-login copilot-mode)
+  :bind (:map copilot-mode-map ("TAB" . copilot-accept-completion)))
+#+END_SRC
+
 ** DONE fix clipboard on wayland
 #+BEGIN_SRC emacs-lisp
   (setq wl-copy-process nil)
diff --git a/home-manager/emacs.nix b/home-manager/emacs.nix
index dc01ca1..5963cd3 100644
--- a/home-manager/emacs.nix
+++ b/home-manager/emacs.nix
@@ -5,13 +5,42 @@ in {
   programs.emacs = {
     enable = true;
     package = pkgs.emacsPgtkNativeComp;
-    extraPackages = _:
-      (with epkgs.melpaPackages; [
+    extraConfig = ''
+      (setq copilot-node-executable "${pkgs.nodejs-slim-16_x}/bin/node")
+    '';
+    overrides = final: prev: {
+      copilot = final.melpaBuild rec {
+          pname = "copilot";
+          version = "20220916.1";
+          commit = "f316299bab75a380ee04e7ca49c79baf0fb296d6";
+
+          src = pkgs.fetchFromGitHub {
+            owner = "zerolfx";
+            repo = "copilot.el";
+            rev = commit;
+            sha256 = "sha256-n4bXnlNfCC00jVeODUlqZNThf7i8rj69zzMMfXBy8tk=";
+          };
+
+          packageRequires = with final; [ dash editorconfig s ];
+
+          recipe = pkgs.writeText "recipe" ''
+            (copilot
+            :repo "zerolfx/copilot.el"
+            :fetcher github
+            :files ("dist" "*.el"))
+          '';
+
+          meta.description = "Emacs plugin for GitHub Copilot";
+        };
+    };
+    extraPackages = p:
+      (with p; [
         all-the-icons
         avy
         company
         counsel
         counsel-projectile
+        copilot
         diminish
         direnv
         dune