diff --git a/flake.lock b/flake.lock
index 8344bfb..4e996f7 100644
--- a/flake.lock
+++ b/flake.lock
@@ -459,6 +459,9 @@
         "latest": "latest",
         "nixos": "nixos",
         "nixos-hardware": "nixos-hardware",
+        "nixpkgs": [
+          "nixos"
+        ],
         "nur": "nur",
         "nvfetcher": "nvfetcher"
       }
diff --git a/flake.nix b/flake.nix
index d409047..4de566b 100644
--- a/flake.nix
+++ b/flake.nix
@@ -14,6 +14,9 @@
       deploy.url = "github:serokell/deploy-rs";
       deploy.inputs.nixpkgs.follows = "nixos";
 
+      # remove after https://github.com/NixOS/nix/pull/4641
+      nixpkgs.follows = "nixos";
+
       ci-agent = {
         url = "github:hercules-ci/hercules-ci-agent";
         inputs = { nix-darwin.follows = "darwin"; nixos-20_09.follows = "nixos"; nixos-unstable.follows = "latest"; };