diff --git a/conda/meta.yaml b/conda/meta.yaml
index 3edacef..1d0031e 100644
--- a/conda/meta.yaml
+++ b/conda/meta.yaml
@@ -23,6 +23,7 @@ requirements:
     - xarray
     - scipy
     - pathlib
+    - scikit-umfpack
 test:
   imports:
     - pathways