diff --git a/appveyor.yml b/appveyor.yml
index 33c1b9993c7c0969e82a690c9b30c4037462256b..667216dd6f6850c56a034ba6750a27ca8b30a9a1 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -54,7 +54,7 @@ install:
     - cmd: conda config --add channels conda-forge
     - cmd: conda config --add channels jlaura
     - cmd: conda install --yes -c conda-forge gdal h5py
-    - cmd: conda install --yes pandas sqlalchemy pyyaml networkx affine
+    - cmd: conda install --yes pandas sqlalchemy pyyaml networkx affine scipy
     - cmd: conda install --yes -c jlaura protobuf pvl
 
     # Development installation