diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 2be0942..02e18e1 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -27,6 +27,7 @@ jobs:
     - name: Install dependencies
       run: |
         python -m pip install "clingo${{ matrix.clingo-version }}"
+        python -m pip installclingox==1.2.1.post2 --extra-index-url https://test.pypi.org/simple/
         python -m pip install nox
         python -m pip install isort
     
diff --git a/AUTHORS.md b/AUTHORS.md
new file mode 100644
index 0000000..6724755
--- /dev/null
+++ b/AUTHORS.md
@@ -0,0 +1,4 @@
+# Contributors
+
+* Jorge Fandinno
+* Lute Lillo
\ No newline at end of file