diff --git a/flake.lock b/flake.lock
index 8ed6f75..6ddeeea 100644
--- a/flake.lock
+++ b/flake.lock
@@ -2,11 +2,11 @@
   "nodes": {
     "flake-utils": {
       "locked": {
-        "lastModified": 1614513358,
-        "narHash": "sha256-LakhOx3S1dRjnh0b5Dg3mbZyH0ToC9I8Y2wKSkBaTzU=",
+        "lastModified": 1631561581,
+        "narHash": "sha256-3VQMV5zvxaVLvqqUrNz3iJelLw30mIVSfZmAaauM3dA=",
         "owner": "numtide",
         "repo": "flake-utils",
-        "rev": "5466c5bbece17adaab2d82fae80b46e807611bf3",
+        "rev": "7e5bf3925f6fbdfaf50a2a7ca0be2879c4261d19",
         "type": "github"
       },
       "original": {
@@ -17,32 +17,16 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1617271991,
-        "narHash": "sha256-VdzjIQaT1FtycNid0iPSVr44Jrstoox6QRLrwCY1uG0=",
+        "lastModified": 1633267966,
+        "narHash": "sha256-gFKvZ5AmV/dDTKXVxacPbXe4R0BsFpwtVaQxuIm2nnk=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "da7f4c4842520167f65c20ad75ecdbd14e27ae91",
+        "rev": "7daf35532d2d8bf5e6f7f962e6cd13a66d01a71d",
         "type": "github"
       },
       "original": {
         "owner": "nixos",
-        "ref": "nixos-20.09",
-        "repo": "nixpkgs",
-        "type": "github"
-      }
-    },
-    "nixpkgs-unstable": {
-      "locked": {
-        "lastModified": 1617899217,
-        "narHash": "sha256-gd5JHH7IkeoIQ/oiGZSqDpGdGt7DMRJTQ8JiD8+hdOQ=",
-        "owner": "nixos",
-        "repo": "nixpkgs",
-        "rev": "9e377a6ce42dccd9b624ae4ce8f978dc892ba0e2",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nixos",
-        "ref": "nixos-unstable",
+        "ref": "nixos-21.05",
         "repo": "nixpkgs",
         "type": "github"
       }
@@ -50,8 +34,7 @@
     "root": {
       "inputs": {
         "flake-utils": "flake-utils",
-        "nixpkgs": "nixpkgs",
-        "nixpkgs-unstable": "nixpkgs-unstable"
+        "nixpkgs": "nixpkgs"
       }
     }
   },
diff --git a/flake.nix b/flake.nix
index c84255b..5b234d4 100644
--- a/flake.nix
+++ b/flake.nix
@@ -2,15 +2,13 @@
   description = "tlater.net web server contents";
 
   inputs = {
-    nixpkgs.url = "github:nixos/nixpkgs/nixos-20.09";
-    nixpkgs-unstable.url = "github:nixos/nixpkgs/nixos-unstable";
+    nixpkgs.url = "github:nixos/nixpkgs/nixos-21.05";
     flake-utils.url = "github:numtide/flake-utils";
   };
 
-  outputs = { self, nixpkgs, nixpkgs-unstable, flake-utils }@inputs:
+  outputs = { self, nixpkgs, flake-utils }@inputs:
     flake-utils.lib.simpleFlake {
-      inherit self;
-      nixpkgs = nixpkgs-unstable;
+      inherit self nixpkgs;
       name = "tlaternet-templates";
 
       overlay = final: prev: {