diff --git a/iyp/crawlers/cisco/umbrella_top1M.py b/iyp/crawlers/cisco/umbrella_top1m.py
similarity index 99%
rename from iyp/crawlers/cisco/umbrella_top1M.py
rename to iyp/crawlers/cisco/umbrella_top1m.py
index d0dfac2..23bd3e2 100644
--- a/iyp/crawlers/cisco/umbrella_top1M.py
+++ b/iyp/crawlers/cisco/umbrella_top1m.py
@@ -14,7 +14,7 @@
 # URL to umbrella top 1M
 URL = 'http://s3-us-west-1.amazonaws.com/umbrella-static/top-1m.csv.zip'
 ORG = 'Cisco'
-NAME = 'cisco.umbrella_top1M'
+NAME = 'cisco.umbrella_top1m'
 
 
 class Crawler(BaseCrawler):
diff --git a/iyp/crawlers/tranco/top1M.py b/iyp/crawlers/tranco/top1m.py
similarity index 100%
rename from iyp/crawlers/tranco/top1M.py
rename to iyp/crawlers/tranco/top1m.py