diff --git a/fetch_ethercodes.py b/fetch_ethercodes.py
index d45ba7c..09f7115 100755
--- a/fetch_ethercodes.py
+++ b/fetch_ethercodes.py
@@ -81,7 +81,7 @@ class gpar:
     keep = False
     timestamp = False
     deltat = 2.5
-    ouifile = 'http://standards-oui.ieee.org/oui/oui.csv'
+    ouifile = 'https://standards-oui.ieee.org/oui/oui.csv'
     outfile = 'ethercodes.dat'
     patchfile = None