diff --git a/flake.lock b/flake.lock
index 6e88f1c..0067ddf 100644
--- a/flake.lock
+++ b/flake.lock
@@ -155,11 +155,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1620897287,
-        "narHash": "sha256-UU0SysjA5h1NMCQhA0lKaeqy9gCBqpq/5dW1BWLbIXo=",
+        "lastModified": 1621411868,
+        "narHash": "sha256-R+7OQ2JYFCb3E7Jl7LhRifzMVCR6Gl8R98zYsNhZtJ8=",
         "owner": "cachix",
         "repo": "pre-commit-hooks.nix",
-        "rev": "40a51af82c1181b9dea3526c4124eee077e30213",
+        "rev": "2e7fac06108b4fc81f5ff9ed9a02bc4f6ede7001",
         "type": "github"
       },
       "original": {
@@ -187,11 +187,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1621092823,
-        "narHash": "sha256-DW0sHJmMcD+mn9DKwG0ZpNht2xSmhzAzDY+c+UkMCUI=",
+        "lastModified": 1621231671,
+        "narHash": "sha256-JibKd8VVGRCS0fpjkQcMxkCsCJz0qbrDMkf5++OMkyE=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "7974217f94c2970026c411d9234dbb47e93a7306",
+        "rev": "52090c613ad854abb824dcbba20e19bfa3890e91",
         "type": "github"
       },
       "original": {
@@ -214,11 +214,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1621080310,
-        "narHash": "sha256-7BMbhiVbR2qVLpBaGMGxNj9/ejoxRm3nMqtTTiXyQcw=",
+        "lastModified": 1621430525,
+        "narHash": "sha256-K7+DWqHLWHQx7QAnwmC3HGtKVjnoVcH/bDzdDhDhhdw=",
         "ref": "master",
-        "rev": "37c399d830bd6f2f789cabfae7cd21a824e976c0",
-        "revCount": 8,
+        "rev": "effd32025de28c69766ae48f7196d0db7dd9e1ec",
+        "revCount": 9,
         "type": "git",
         "url": "https://git.sbruder.de/simon/nixpkgs-overlay"
       },
@@ -229,11 +229,11 @@
     },
     "nixpkgs-unstable": {
       "locked": {
-        "lastModified": 1621073999,
-        "narHash": "sha256-Cp99YreSFedcWovxNmO8g8qFYltQQJPRLfuot6Z7iGE=",
+        "lastModified": 1621160191,
+        "narHash": "sha256-5xaEDqmmDsJnd2agtmEIrbUHSuNjTqidJPkBrmls6Ek=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "83d907fd760d9ee4f49b4b7e4b1c6682f137b573",
+        "rev": "7a1fbc38a4b538450ac0d42aec8a3e513b4d723e",
         "type": "github"
       },
       "original": {