diff --git a/environment.yml b/environment.yml
index a230b16..e4ffeb7 100644
--- a/environment.yml
+++ b/environment.yml
@@ -103,3 +103,4 @@ dependencies:
       - webencodings==0.5.1
       - websocket-client==1.6.3
       - widgetsnbextension==4.0.9
+      - sf_convert