diff --git a/circle.yml b/circle.yml
index 3bcfb2b..9ee76d2 100644
--- a/circle.yml
+++ b/circle.yml
@@ -22,4 +22,5 @@ test:
     - flake8 md_pdf/ --ignore=E128,E501
     - safety check
     - bandit -r md_pdf/
+    - mdp --update-csl
     - cd test-files/ && mdp -vvv
diff --git a/md_pdf/csl.py b/md_pdf/csl.py
index 3bf07c6..42ab5e5 100644
--- a/md_pdf/csl.py
+++ b/md_pdf/csl.py
@@ -26,6 +26,7 @@ def download_csl():
     remove_dir(CSL_DIR)
 
     def download_handle(count, block_size, total_size):
+        print(count, block_size, total_size, int(count * block_size * 100 / total_size))
         bar.update(int(count * block_size * 100 / total_size))
 
     _, download_location = tempfile.mkstemp()