diff --git a/flake.lock b/flake.lock
index ff6e3c6..2362728 100644
--- a/flake.lock
+++ b/flake.lock
@@ -2,16 +2,16 @@
   "nodes": {
     "nixpkgs": {
       "locked": {
-        "lastModified": 1642609835,
-        "narHash": "sha256-ZwJnV4mdis28u5vH240ec2mrApuEJYJekn23qlTwJ8c=",
+        "lastModified": 1650161686,
+        "narHash": "sha256-70ZWAlOQ9nAZ08OU6WY7n4Ij2kOO199dLfNlvO/+pf8=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "77aa71f66fd05d9e7b7d1c084865d703a8008ab7",
+        "rev": "1ffba9f2f683063c2b14c9f4d12c55ad5f4ed887",
         "type": "github"
       },
       "original": {
         "id": "nixpkgs",
-        "ref": "nixos-21.11",
+        "ref": "nixos-unstable",
         "type": "indirect"
       }
     },
diff --git a/flake.nix b/flake.nix
index 1a87b60..78ef99d 100644
--- a/flake.nix
+++ b/flake.nix
@@ -2,7 +2,7 @@
   description = "A simple Go package";
 
   # Nixpkgs / NixOS version to use.
-  inputs.nixpkgs.url = "nixpkgs/nixos-21.11";
+  inputs.nixpkgs.url = "nixpkgs/nixos-unstable";
 
   outputs = { self, nixpkgs }:
     let