diff --git a/env-dev.yml b/env-dev.yml
index 742045a..21e92bf 100644
--- a/env-dev.yml
+++ b/env-dev.yml
@@ -17,4 +17,5 @@ dependencies:
   - pytest
   - openssh>=8.3
   - xarray
-  - mule
\ No newline at end of file
+  - mule
+  - um2nc
\ No newline at end of file