diff --git a/appveyor.yml b/appveyor.yml
index c4e39d68eadc20ef8ca1193a28ce48b4d427e338..f9b985909108abe30441553a52fdcad83eb403bc 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -20,7 +20,7 @@ install:
   - cmd: conda config --set always_yes yes --set changeps1 no
   - cmd: conda update -q conda
   - cmd: conda config --add channels conda-forge
-  - cmd: conda install -c conda-forge pvl protobuf gdal numpy pandas sqlalchemy pyyaml networkx affine
+  - cmd: conda install -c conda-forge pvl protobuf gdal numpy pandas sqlalchemy pyyaml networkx affine h5py
   - cmd: conda install conda-build anaconda-client pytest-cov
 
 build_script: