diff --git a/flake.lock b/flake.lock
index 6dc9c77..4e26ada 100644
--- a/flake.lock
+++ b/flake.lock
@@ -3,11 +3,11 @@
     "crate2nix": {
       "flake": false,
       "locked": {
-        "lastModified": 1617792032,
-        "narHash": "sha256-L94PQeY4zGynAKa6E+WqsK3x66YZbPuWb/uQ9LaXExY=",
+        "lastModified": 1650460722,
+        "narHash": "sha256-jk4SZ8iOnfJEceVULjyOAq4MrX9CfU5bCWMyZP9nJVA=",
         "owner": "kolloch",
         "repo": "crate2nix",
-        "rev": "1d2db45b82efb4608973bf3832cd2cf5f464ee91",
+        "rev": "78258f27fc3121562a44eb02c652a5ec77cf8d02",
         "type": "github"
       },
       "original": {
@@ -19,11 +19,11 @@
     "flake-compat": {
       "flake": false,
       "locked": {
-        "lastModified": 1606424373,
-        "narHash": "sha256-oq8d4//CJOrVj+EcOaSXvMebvuTkmBJuT5tzlfewUnQ=",
+        "lastModified": 1650374568,
+        "narHash": "sha256-Z+s0J8/r907g149rllvwhb4pKi8Wam5ij0st8PwAh+E=",
         "owner": "edolstra",
         "repo": "flake-compat",
-        "rev": "99f1c2157fba4bfe6211a321fd0ee43199025dbf",
+        "rev": "b4a34015c698c7793d592d66adbab377907a2be8",
         "type": "github"
       },
       "original": {
@@ -34,11 +34,11 @@
     },
     "flake-utils": {
       "locked": {
-        "lastModified": 1614513358,
-        "narHash": "sha256-LakhOx3S1dRjnh0b5Dg3mbZyH0ToC9I8Y2wKSkBaTzU=",
+        "lastModified": 1637014545,
+        "narHash": "sha256-26IZAc5yzlD9FlDT54io1oqG/bBoyka+FJk5guaX4x4=",
         "owner": "numtide",
         "repo": "flake-utils",
-        "rev": "5466c5bbece17adaab2d82fae80b46e807611bf3",
+        "rev": "bba5dcc8e0b20ab664967ad83d24d64cb64ec4f4",
         "type": "github"
       },
       "original": {
@@ -49,11 +49,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1617899217,
-        "narHash": "sha256-gd5JHH7IkeoIQ/oiGZSqDpGdGt7DMRJTQ8JiD8+hdOQ=",
+        "lastModified": 1651558728,
+        "narHash": "sha256-8HzyRnWlgZluUrVFNOfZAOlA1fghpOSezXvxhalGMUo=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "9e377a6ce42dccd9b624ae4ce8f978dc892ba0e2",
+        "rev": "cbe587c735b734405f56803e267820ee1559e6c1",
         "type": "github"
       },
       "original": {
@@ -65,15 +65,16 @@
     },
     "nixpkgs_2": {
       "locked": {
-        "lastModified": 1617325113,
-        "narHash": "sha256-GksR0nvGxfZ79T91UUtWjjccxazv6Yh/MvEJ82v1Xmw=",
-        "owner": "nixos",
+        "lastModified": 1637453606,
+        "narHash": "sha256-Gy6cwUswft9xqsjWxFYEnx/63/qzaFUwatcbV5GF/GQ=",
+        "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "54c1e44240d8a527a8f4892608c4bce5440c3ecb",
+        "rev": "8afc4e543663ca0a6a4f496262cd05233737e732",
         "type": "github"
       },
       "original": {
         "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
         "repo": "nixpkgs",
         "type": "github"
       }
@@ -93,11 +94,11 @@
         "nixpkgs": "nixpkgs_2"
       },
       "locked": {
-        "lastModified": 1618021386,
-        "narHash": "sha256-jxuzRfJZs4+WqnbvduTOFBnPHM0CsusSV+plzP+QG9c=",
+        "lastModified": 1651632340,
+        "narHash": "sha256-Kq1yghXZxJ12Sw1nbzoO2Ag8/AxqbbD84wiz8go159o=",
         "owner": "oxalica",
         "repo": "rust-overlay",
-        "rev": "6642000a09ac2d0a1a8d91849e28a36f2c6c35cf",
+        "rev": "88991ffbd57e10b474ea768ec0b54c4f379c566c",
         "type": "github"
       },
       "original": {
@@ -108,11 +109,11 @@
     },
     "utils": {
       "locked": {
-        "lastModified": 1617631617,
-        "narHash": "sha256-PARRCz55qN3gy07VJZIlFeOX420d0nGF0RzGI/9hVlw=",
+        "lastModified": 1649676176,
+        "narHash": "sha256-OWKJratjt2RW151VUlJPRALb7OU2S5s+f0vLj4o1bHM=",
         "owner": "numtide",
         "repo": "flake-utils",
-        "rev": "b2c27d1a81b0dc266270fa8aeecebbd1807fc610",
+        "rev": "a4b154ebbdc88c8498a5c7b01589addc9e9cb678",
         "type": "github"
       },
       "original": {
diff --git a/flake.nix b/flake.nix
index 5a094e3..fbef637 100644
--- a/flake.nix
+++ b/flake.nix
@@ -22,6 +22,8 @@
     let
       # If you change the name here, you must also do it in Cargo.toml
       name = "rust-nix-template";
+      # Rust release channel to use.
+      # https://rust-lang.github.io/rustup/concepts/channels.html
       rustChannel = "stable";
     in
     utils.lib.eachDefaultSystem