diff --git a/flake.lock b/flake.lock
index 65b4d5c..5224a0e 100644
--- a/flake.lock
+++ b/flake.lock
@@ -1,6 +1,37 @@
 {
   "nodes": {
+    "agenix": {
+      "inputs": {
+        "nixpkgs": "nixpkgs"
+      },
+      "locked": {
+        "lastModified": 1620877075,
+        "narHash": "sha256-XvgTqtmQZHegu9UMDSR50gK5cHEM2gbnRH0qecmdN54=",
+        "owner": "ryantm",
+        "repo": "agenix",
+        "rev": "e543aa7d68f222e1e771165da9e9a64b5bf7b3e3",
+        "type": "github"
+      },
+      "original": {
+        "owner": "ryantm",
+        "repo": "agenix",
+        "type": "github"
+      }
+    },
     "nixpkgs": {
+      "locked": {
+        "lastModified": 1618628710,
+        "narHash": "sha256-9xIoU+BrCpjs5nfWcd/GlU7XCVdnNKJPffoNTxgGfhs=",
+        "path": "/nix/store/z1rf17q0fxj935cmplzys4gg6nxj1as0-source",
+        "rev": "7919518f0235106d050c77837df5e338fb94de5d",
+        "type": "path"
+      },
+      "original": {
+        "id": "nixpkgs",
+        "type": "indirect"
+      }
+    },
+    "nixpkgs_2": {
       "locked": {
         "lastModified": 1622622179,
         "narHash": "sha256-XCw/9QDuj9J6prVR8YrteTcFKj2sRWYIjwgs8qOOrYQ=",
@@ -16,7 +47,7 @@
         "type": "github"
       }
     },
-    "nixpkgs_2": {
+    "nixpkgs_3": {
       "locked": {
         "lastModified": 1607522989,
         "narHash": "sha256-o/jWhOSAlaK7y2M57OIriRt6whuVVocS/T0mG7fd1TI=",
@@ -33,13 +64,14 @@
     },
     "root": {
       "inputs": {
-        "nixpkgs": "nixpkgs",
+        "agenix": "agenix",
+        "nixpkgs": "nixpkgs_2",
         "simple-nixos-mailserver": "simple-nixos-mailserver"
       }
     },
     "simple-nixos-mailserver": {
       "inputs": {
-        "nixpkgs": "nixpkgs_2",
+        "nixpkgs": "nixpkgs_3",
         "utils": "utils"
       },
       "locked": {