diff --git a/geomagio/edge/MiniSeedFactory.py b/geomagio/edge/MiniSeedFactory.py
index d56bab7713c0684c199fa227a8d815d3621c9cb1..abcf8b261a501132f9e210a76c2efb670287eaaf 100644
--- a/geomagio/edge/MiniSeedFactory.py
+++ b/geomagio/edge/MiniSeedFactory.py
@@ -68,7 +68,7 @@ class MiniSeedFactory(TimeseriesFactory):
         self,
         host="cwbpub.cr.usgs.gov",
         port=2061,
-        write_port=7981,
+        write_port=7974,
         observatory=None,
         channels=None,
         type=None,