1 files changed, 1 insertions, 0 deletions

diff --git a/flake.nix b/flake.nix
index 60e3ebb..66c5edf 100644
--- a/flake.nix
+++ b/flake.nix
@@ -1,5 +1,6 @@
 {
   inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-21.11";
     devshell.url = "github:numtide/devshell";
     nixlib.url = "github:divnix/nixpkgs.lib";
     flake-compat = {