diff --git a/singularity-install/requirements.txt b/singularity-install/requirements.txt
index a453071..5677802 100644
--- a/singularity-install/requirements.txt
+++ b/singularity-install/requirements.txt
@@ -8,3 +8,4 @@ psutil==5.4.2
 scipy==1.0.0
 scikit-learn==0.19.1
 jinja2==2.10
+h5sparse=0.1.0