diff --git a/spack.yaml b/spack.yaml
index 9f123d1..47cca54 100644
--- a/spack.yaml
+++ b/spack.yaml
@@ -2,6 +2,7 @@ spack:
   view: false
   specs:
     # - cp2k@9.1
+    - grid@git.991667ba5e2a5dd972dd8f813e2a35be74b9adc9
     - hpgmg@0.4
     - intel-mpi-benchmarks@2019.6
     - libint@2.6.0