diff --git a/geomagio/iaga2002/__init__.py b/geomagio/iaga2002/__init__.py
index 5238db99809bc4d8f2334f98f5623330fc572be7..fea22702df7cb5bc31b36a6e5b87a1e555d1e3a0 100644
--- a/geomagio/iaga2002/__init__.py
+++ b/geomagio/iaga2002/__init__.py
@@ -1,7 +1,7 @@
 """IO Module for IAGA 2002 Format
 
 Based on documentation at:
-  http://www.ngdc.noaa.gov/IAGA/vdat/iagaformat.html
+  https://www.ngdc.noaa.gov/IAGA/vdat/IAGA2002/iaga2002format.html
 """
 
 from IAGA2002Factory import IAGA2002Factory