diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 37ab12a..54b74b3 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -59,6 +59,9 @@ jobs:
       - name: dependencies
         run: |
           luarocks install busted
+          luarocks config
+          luarocks show luafilesystem
+          lua -e "print(require'lfs')"
           luarocks make
 
       - name: test