diff --git a/flake.lock b/flake.lock
index 7948cd9a8..f9d9428c3 100644
--- a/flake.lock
+++ b/flake.lock
@@ -18,17 +18,17 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1637636156,
-        "narHash": "sha256-E2ym4Vcpqu9JYoQDXJZR48gVD+LPPbaCoYveIk7Xu3Y=",
+        "lastModified": 1637328665,
+        "narHash": "sha256-z6ufVwquLM0IiNZxd5oT1M33Lv0aB3WICpk8ZKwpxjw=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "b026e1cf87a108dd06fe521f224fdc72fd0b013d",
+        "rev": "0f4b4b85d959200f52c16bbb74036994e7db5f74",
         "type": "github"
       },
       "original": {
         "owner": "NixOS",
-        "ref": "release-21.11",
         "repo": "nixpkgs",
+        "rev": "0f4b4b85d959200f52c16bbb74036994e7db5f74",
         "type": "github"
       }
     },
@@ -80,11 +80,11 @@
         "nixpkgs": "nixpkgs"
       },
       "locked": {
-        "lastModified": 1638075448,
-        "narHash": "sha256-8eTjXvQ285w4958KCMScrr53IlfI1dFFmUl0LEAHRWg=",
+        "lastModified": 1638611523,
+        "narHash": "sha256-/FZ72XsaFI9zL50omHznJCAykf8BOw7Tgtf8sThyurk=",
         "ref": "master",
-        "rev": "681d85d3bed6b3bf788806dc4f1c1682f8aa5fd9",
-        "revCount": 451,
+        "rev": "c98f367f90b7b658b3b6476aa111f68676f68f31",
+        "revCount": 481,
         "type": "git",
         "url": "https://git.m-labs.hk/M-Labs/nac3.git"
       },