diff --git a/flake.lock b/flake.lock
index cbeb12f..acb7059 100644
--- a/flake.lock
+++ b/flake.lock
@@ -41,11 +41,11 @@
     },
     "emacs-overlay": {
       "locked": {
-        "lastModified": 1651465270,
-        "narHash": "sha256-x6xJ++tBB7l02lok3mBTYykefjamF9BgK/9BbeQlxoQ=",
+        "lastModified": 1651750171,
+        "narHash": "sha256-IltysR3/0qLKrhbnUwdLbwFPv26Q9gvxuzqx1h/G/jQ=",
         "owner": "nix-community",
         "repo": "emacs-overlay",
-        "rev": "015c8c2cfd4f62d7f317e777ebaef0df39e7a748",
+        "rev": "4e0481c777deab3f01cb5a6bdddffd49321ea1a3",
         "type": "github"
       },
       "original": {
@@ -77,11 +77,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1651007218,
-        "narHash": "sha256-NkQAMtqW0PSJTbLHalyZtaqj0ai2TZMOedug9yDIcFw=",
+        "lastModified": 1651519540,
+        "narHash": "sha256-3k6p8VsTwwRPQjE8rrMh+o2AZACZn/eeYJ7ivdQ/Iro=",
         "owner": "nix-community",
         "repo": "home-manager",
-        "rev": "d14adb99f3fb562ec74ad18c032efc154b438034",
+        "rev": "d93d56ab8c1c6aa575854a79b9d2f69d491db7d0",
         "type": "github"
       },
       "original": {
@@ -93,7 +93,10 @@
     },
     "naersk": {
       "inputs": {
-        "nixpkgs": "nixpkgs"
+        "nixpkgs": [
+          "comma",
+          "nixpkgs"
+        ]
       },
       "locked": {
         "lastModified": 1650101877,
@@ -128,15 +131,18 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1651310835,
-        "narHash": "sha256-MLk/zsLlbPhwFucxL64Fr+oIrvQC2/76Ap2F7ekbPNI=",
-        "path": "/nix/store/fj0r6l3gglr0k0b4dxn3hm8drcwclm36-source",
-        "rev": "fd3e33d696b81e76b30160dfad2efb7ac1f19879",
-        "type": "path"
+        "lastModified": 1651662302,
+        "narHash": "sha256-utlTjLa1s4ezdQIUvnBtmA9TBYFrPlXpAJnCXEiZFZI=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "dff5496b12817e3d019983827c4b7ba7beb96580",
+        "type": "github"
       },
       "original": {
-        "id": "nixpkgs",
-        "type": "indirect"
+        "owner": "NixOS",
+        "ref": "nixos-21.11",
+        "repo": "nixpkgs",
+        "type": "github"
       }
     },
     "nixpkgs-21_05": {
@@ -171,11 +177,11 @@
     },
     "nixpkgs-unstable": {
       "locked": {
-        "lastModified": 1651007983,
-        "narHash": "sha256-GNay7yDPtLcRcKCNHldug85AhAvBpTtPEJWSSDYBw8U=",
+        "lastModified": 1651558728,
+        "narHash": "sha256-8HzyRnWlgZluUrVFNOfZAOlA1fghpOSezXvxhalGMUo=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "e10da1c7f542515b609f8dfbcf788f3d85b14936",
+        "rev": "cbe587c735b734405f56803e267820ee1559e6c1",
         "type": "github"
       },
       "original": {
@@ -186,22 +192,6 @@
       }
     },
     "nixpkgs_2": {
-      "locked": {
-        "lastModified": 1651310835,
-        "narHash": "sha256-MLk/zsLlbPhwFucxL64Fr+oIrvQC2/76Ap2F7ekbPNI=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "fd3e33d696b81e76b30160dfad2efb7ac1f19879",
-        "type": "github"
-      },
-      "original": {
-        "owner": "NixOS",
-        "ref": "nixos-21.11",
-        "repo": "nixpkgs",
-        "type": "github"
-      }
-    },
-    "nixpkgs_3": {
       "locked": {
         "lastModified": 1626852498,
         "narHash": "sha256-lOXUJvi0FJUXHTVSiC5qsMRtEUgqM4mGZpMESLuGhmo=",
@@ -222,7 +212,7 @@
         "emacs-overlay": "emacs-overlay",
         "home-manager": "home-manager",
         "nixos-hardware": "nixos-hardware",
-        "nixpkgs": "nixpkgs_2",
+        "nixpkgs": "nixpkgs",
         "nixpkgs-unstable": "nixpkgs-unstable",
         "simple-nixos-mailserver": "simple-nixos-mailserver",
         "sops-nix": "sops-nix"
@@ -231,7 +221,7 @@
     "simple-nixos-mailserver": {
       "inputs": {
         "blobs": "blobs",
-        "nixpkgs": "nixpkgs_3",
+        "nixpkgs": "nixpkgs_2",
         "nixpkgs-21_05": "nixpkgs-21_05",
         "nixpkgs-21_11": "nixpkgs-21_11",
         "utils": "utils_2"