diff --git a/beetsplug/lastgenre/__init__.py b/beetsplug/lastgenre/__init__.py
index 2f660206e..c3a4332bd 100644
--- a/beetsplug/lastgenre/__init__.py
+++ b/beetsplug/lastgenre/__init__.py
@@ -152,7 +152,7 @@ class LastGenrePlugin(plugins.BeetsPlugin):
             self._log.debug('Loading canonicalization tree {0}', c14n_filename)
             c14n_filename = normpath(c14n_filename)
             with codecs.open(c14n_filename, 'r', encoding='utf-8') as f:
-                genres_tree = yaml.load(f)
+                genres_tree = yaml.safe_load(f)
             flatten_tree(genres_tree, [], self.c14n_branches)
 
     @property