diff --git a/make_bar_graph.py b/make_bar_graph.py
index bab900e..484c2c6 100644
--- a/make_bar_graph.py
+++ b/make_bar_graph.py
@@ -2,7 +2,7 @@ import pandas as pd
 import numpy as np
 import altair as alt
 import json
-
+import os
 # npm install vega-lite vega-cli canvas