diff --git a/modules/base/nix/default.nix b/modules/base/nix/default.nix
index 2eab72bf..c89c0c0b 100644
--- a/modules/base/nix/default.nix
+++ b/modules/base/nix/default.nix
@@ -57,7 +57,7 @@ in
         dates = "hourly";
         options = "--delete-older-than 7d";
       };
-      package = pkgs.nixStable;
+      package = pkgs.nixVersions.nix_2_14;
       settings = {
         auto-optimise-store = true;
         substituters = [
diff --git a/shells/nixos-config.nix b/shells/nixos-config.nix
index 0b0e176c..f5a71656 100644
--- a/shells/nixos-config.nix
+++ b/shells/nixos-config.nix
@@ -17,7 +17,7 @@
   packages = [
     pkgs.agenix
     # Use nixos-rebuild from flake, since it might be patched
-    pkgs.nixos-rebuild
+    (pkgs.nixos-rebuild.override { nix = pkgs.nixVersions.nix_2_14; })
     pkgs.nixpkgs-fmt
   ];
 }