diff --git a/nix/sources.json b/nix/sources.json
index 726e9c1..44d1c87 100644
--- a/nix/sources.json
+++ b/nix/sources.json
@@ -56,16 +56,16 @@
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     },
     "nixpkgs": {
-        "branch": "nixos-21.11",
+        "branch": "nixos-22.05",
         "builtin": false,
         "description": "A read-only mirror of NixOS/nixpkgs tracking the released channels. Send issues and PRs to",
         "homepage": "https://github.com/NixOS/nixpkgs",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "9bc0e974545d5bc4c24e1ed047be0dc4e30e494b",
-        "sha256": "09srdp53k3jc6qj66g85618xg4x2y705ljfn486g437icdp7mln5",
+        "rev": "2a64cd672b2706fbca461870cc9ac708b49d9016",
+        "sha256": "1cma21irggnjg2pp9fpj5m60bnpjkmax24sp0vnbniwbwvb1jcib",
         "type": "tarball",
-        "url": "https://github.com/NixOS/nixpkgs/archive/9bc0e974545d5bc4c24e1ed047be0dc4e30e494b.tar.gz",
+        "url": "https://github.com/NixOS/nixpkgs/archive/2a64cd672b2706fbca461870cc9ac708b49d9016.tar.gz",
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     },
     "nixpkgsUnstable": {