diff --git a/pdf_build_src/pandoc_script.py b/pdf_build_src/pandoc_script.py
index e9710482ab..b425fbeb50 100644
--- a/pdf_build_src/pandoc_script.py
+++ b/pdf_build_src/pandoc_script.py
@@ -39,7 +39,7 @@ def _flatten_values(lst):
     fname_mkdocs_yml = _find(HERE, "mkdocs.yml")
 
     with open(fname_mkdocs_yml, "r") as stream:
-        mkdocs_yml = yaml.safe_load(stream)
+        mkdocs_yml = yaml.load(stream, yaml.Loader)
 
     sections = mkdocs_yml["nav"][0]["The BIDS Specification"]