diff --git a/agenda/sun.py b/agenda/sun.py
index 72adc69..17995bb 100644
--- a/agenda/sun.py
+++ b/agenda/sun.py
@@ -3,7 +3,7 @@
 import typing
 from datetime import datetime
 
-import ephem
+import ephem  # type: ignore
 
 
 def bristol() -> ephem.Observer: