diff --git a/flake.lock b/flake.lock
index 2a7d71b..92772a6 100644
--- a/flake.lock
+++ b/flake.lock
@@ -11,11 +11,11 @@
         "nixpkgs-stable": "nixpkgs-stable"
       },
       "locked": {
-        "lastModified": 1692225040,
-        "narHash": "sha256-jbQNvkgWGioiC6S39dZVyn6us8p/DlEvm5hQKEYkzDU=",
+        "lastModified": 1698258239,
+        "narHash": "sha256-qnhoYYIJ0L/P7H/f56lQUEvpzNlXh4sxuHpRERV+B44=",
         "owner": "zhaofengli",
         "repo": "attic",
-        "rev": "b43d12082e34bceb26038bdad0438fd68804cfcd",
+        "rev": "e9918bc6be268da6fa97af6ced15193d8a0421c0",
         "type": "github"
       },
       "original": {
diff --git a/flake.nix b/flake.nix
index 57dfb23..efbe20f 100644
--- a/flake.nix
+++ b/flake.nix
@@ -1,20 +1,21 @@
 {
   description = "e10";
 
-  # nixConfig = {
-  #   extra-substituters = [
-  #     "https://nix-community.cachix.org"
-  #     "https://e10.cachix.org"
-  #     "https://numtide.cachix.org"
-  #     "https://attic.e10.camp"
-  #   ];
-  #   extra-trusted-public-keys = [
-  #     "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
-  #     "e10.cachix.org-1:/++Tmo/ghEqnLwsQJdXn04c262agRCK5PaPYz8NcVfo="
-  #     "numtide.cachix.org-1:2ps1kLBUWjxIneOy1Ik6cQjb41X0iXVXeHigGmycPPE="
-  #     "attic.e10.camp-e10:GRxL2EezM+0vZXpa9fePFqTM1qstxiV56tc5K3eDugk="
-  #   ];
-  # };
+  nixConfig = {
+    extra-substituters = [
+      "https://nix-community.cachix.org"
+      "https://e10.cachix.org"
+      "https://numtide.cachix.org"
+      "https://attic.e10.camp/e10"
+    ];
+
+    extra-trusted-public-keys = [
+      "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
+      "e10.cachix.org-1:/++Tmo/ghEqnLwsQJdXn04c262agRCK5PaPYz8NcVfo="
+      "numtide.cachix.org-1:2ps1kLBUWjxIneOy1Ik6cQjb41X0iXVXeHigGmycPPE="
+      "attic.e10.camp-e10:GRxL2EezM+0vZXpa9fePFqTM1qstxiV56tc5K3eDugk="
+    ];
+  };
 
   inputs = {
     nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
diff --git a/modules/development/shell.nix b/modules/development/shell.nix
index d063f34..500f7c9 100644
--- a/modules/development/shell.nix
+++ b/modules/development/shell.nix
@@ -20,6 +20,7 @@
         '';
 
         packages = with pkgs; [
+          cachix
           deadnix
           just
           statix
diff --git a/modules/profiles/core/caching.nix b/modules/profiles/core/caching.nix
index f766951..dbbf535 100644
--- a/modules/profiles/core/caching.nix
+++ b/modules/profiles/core/caching.nix
@@ -1,5 +1,8 @@
-{ inputs, ... }: {
-  environment.systemPackages = [ inputs.attic.packages.x86_64-linux.attic ];
+{ inputs, pkgs, ... }: {
+  environment.systemPackages = with pkgs; [
+    inputs.attic.packages.x86_64-linux.attic
+    cachix
+  ];
 
   nix.settings = {
     substituters = [
@@ -7,6 +10,7 @@
       "https://numtide.cachix.org"
       "https://attic.e10.camp"
     ];
+
     trusted-public-keys = [
       "e10.cachix.org-1:/++Tmo/ghEqnLwsQJdXn04c262agRCK5PaPYz8NcVfo="
       "numtide.cachix.org-1:2ps1kLBUWjxIneOy1Ik6cQjb41X0iXVXeHigGmycPPE="