diff --git a/utils/plot.py b/utils/plot.py
index 44b39a7..2a62cfe 100644
--- a/utils/plot.py
+++ b/utils/plot.py
@@ -1,3 +1,5 @@
+# Adapted from  https://github.com/openai/baselines/blob/master/baselines/results_plotter.py
+
 import numpy as np
 import component