diff --git a/ExtensionCrawler/crx.py b/ExtensionCrawler/crx.py
index 33ad4b8..1493886 100644
--- a/ExtensionCrawler/crx.py
+++ b/ExtensionCrawler/crx.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python3.6
+#!/usr/bin/env python3.7
 #
 # Copyright (C) 2016,2017 The University of Sheffield, UK
 #