diff --git a/modules/shared/nix.nix b/modules/shared/nix.nix
index ed38dfb..41b775c 100644
--- a/modules/shared/nix.nix
+++ b/modules/shared/nix.nix
@@ -11,6 +11,9 @@
     warn-dirty = false;
   };
 
+  # Disable channels — we use flakes exclusively
+  nix.channel.enable = false;
+
   nixpkgs = {
     config.allowUnfree = true;
     overlays = [ (import ../../overlays) ];