diff --git a/.forgejo/workflows/ci.yml b/.forgejo/workflows/ci.yml
index 4a5ebd7..00c2da6 100644
--- a/.forgejo/workflows/ci.yml
+++ b/.forgejo/workflows/ci.yml
@@ -19,7 +19,7 @@ jobs:
         with:
           nix_path: nixpkgs=channel:nixos-unstable
           extra_nix_config: |
-            sandbox = false
+            sandbox = true
 
       - name: Enable flakes
         run: |