diff --git a/flake.lock b/flake.lock
index 75e49e5..458b8b7 100644
--- a/flake.lock
+++ b/flake.lock
@@ -1,39 +1,41 @@
 {
   "nodes": {
-    "nixpkgs": {
-      "locked": {
-        "lastModified": 1617082367,
-        "narHash": "sha256-W0cQPGjc4IVzryaGycuoS8KZkXafS1P23w/fcKLoD5Y=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "04a2b269d8921505a2969fc9ec25c1f517f2b307",
-        "type": "github"
-      },
-      "original": {
-        "id": "nixpkgs",
-        "ref": "nixos-unstable",
-        "type": "indirect"
-      }
-    },
     "root": {
       "inputs": {
-        "nixpkgs": "nixpkgs",
-        "stable2009": "stable2009"
+        "stable2009": "stable2009",
+        "unstable": "unstable"
       }
     },
     "stable2009": {
       "locked": {
-        "lastModified": 1617542311,
-        "narHash": "sha256-YbYqpUA8EChwUaUSj8wIukv9ieFQdUnSSm5RypghNBA=",
+        "lastModified": 1617786842,
+        "narHash": "sha256-nuhewc9ANLkY2dBc9ikBQmy5EdCPElHbxd/pU96HdG0=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "91b77fe6942fe999b1efbe906dc98024d1917c0d",
+        "rev": "d6f63659a7021051a46035373ed50fbea7e4e924",
         "type": "github"
       },
       "original": {
-        "id": "nixpkgs",
+        "owner": "NixOS",
         "ref": "nixos-20.09",
-        "type": "indirect"
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "unstable": {
+      "locked": {
+        "lastModified": 1617899217,
+        "narHash": "sha256-gd5JHH7IkeoIQ/oiGZSqDpGdGt7DMRJTQ8JiD8+hdOQ=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "9e377a6ce42dccd9b624ae4ce8f978dc892ba0e2",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
       }
     }
   },