diff --git a/flake.lock b/flake.lock
index 25600b1..acc2e83 100644
--- a/flake.lock
+++ b/flake.lock
@@ -22,16 +22,16 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1634919341,
-        "narHash": "sha256-iYTckx+vxrGskDsI7US/3N1CDGYjnFl2Wh6gkLBmAKI=",
+        "lastModified": 1641687203,
+        "narHash": "sha256-W6Xrb/l1x+E+WMVLw4q5HUnNjt3x4WQFSYJtjJtopbU=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "1cab3e231b41f38f2d2cbf5617eb7b88e433428a",
+        "rev": "00acdb2aa817048fbe1f91ece18fe7de09762531",
         "type": "github"
       },
       "original": {
         "owner": "NixOS",
-        "ref": "nixpkgs-unstable",
+        "ref": "nixos-21.11",
         "repo": "nixpkgs",
         "type": "github"
       }
diff --git a/flake.nix b/flake.nix
index e5c5b9f..9533e5f 100644
--- a/flake.nix
+++ b/flake.nix
@@ -2,7 +2,7 @@
   description = "My cute Rust crate!";
 
   inputs = {
-    nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-21.11";
     utils.url = "github:numtide/flake-utils";
     naersk.url = "github:nmattia/naersk";
     naersk.inputs.nixpkgs.follows = "nixpkgs";