diff --git a/prometheus_frigate_exporter.py b/prometheus_frigate_exporter.py
index 4beb880..13eb814 100644
--- a/prometheus_frigate_exporter.py
+++ b/prometheus_frigate_exporter.py
@@ -6,6 +6,7 @@ import re
 import time
 import sys
 import logging
+import os
 
 
 def add_metric(metric, label, stats, key, multiplier=1.0):