diff --git a/scripts/transform-file.py b/scripts/transform-file.py
index 8e3a4c1..2af2935 100755
--- a/scripts/transform-file.py
+++ b/scripts/transform-file.py
@@ -62,7 +62,7 @@ def extract_markdown_abstract(filename):
                 yaml_block = ''
             elif state == 1:
                 if line == '---\n':
-                    y = yaml.load(yaml_block)
+                    y = yaml.safe_load(yaml_block)
                     if y is None:
                         return None
                     else: