Index: rqt_tf_tree-0.6.1/src/rqt_tf_tree/dotcode_tf.py
===================================================================
--- rqt_tf_tree-0.6.1.orig/src/rqt_tf_tree/dotcode_tf.py
+++ rqt_tf_tree-0.6.1/src/rqt_tf_tree/dotcode_tf.py
@@ -93,7 +93,7 @@ class RosTfTreeDotcodeGenerator(object):
             self.listen_duration = 0
 
             yaml_data = tf2_frame_srv().frame_yaml
-            data = yaml_parser.load(yaml_data)
+            data = yaml_parser.safe_load(yaml_data)
             self.graph = self.generate(data, timer.now().to_sec())
             self.dotcode = self.dotcode_factory.create_dot(self.graph)