diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index e4c1b4d..5337d38 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -4,10 +4,9 @@ on:
   push:
     branches:
       - master
-  workflow_dispatch:
 
 env:
-  nixpkgs_channel: nixpkgs=channel:nixos-25.05
+  nixpkgs_channel: nixpkgs=channel:nixos-24.11
   oldest_supported_installer: nix-2.8.0
 
 jobs: