diff --git a/appveyor.yml b/appveyor.yml
index 58fa4f2ff020fce49d20478182eb8fd5aa0e33d0..e4347ef9757defea5db2b91aa07790e976154eab 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -54,8 +54,9 @@ 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
+    - cmd: conda install --yes pandas sqlalchemy pyyaml networkx affine
     - cmd: conda install --yes -c jlaura protobuf pvl
+    - cmd: pip install libpysal
 
     # Development installation
     - cmd: conda install --yes nose coverage