diff --git a/buildsystem/spack/ascent/spack.yaml b/buildsystem/spack/ascent/spack.yaml
index d05fd4b3..568992d1 100644
--- a/buildsystem/spack/ascent/spack.yaml
+++ b/buildsystem/spack/ascent/spack.yaml
@@ -41,7 +41,7 @@ spack:
     exago:
       require: +raja+hiop+ipopt
     hiop:
-      require: '@1.0.0+sparse+mpi+ginkgo+kron+cusolver_lu'
+      require: '@develop+sparse+mpi+ginkgo+kron+cusolver_lu'
     coinhsl:
       require: '@2019.05.21'
     ipopt:
diff --git a/buildsystem/spack/deception/spack.yaml b/buildsystem/spack/deception/spack.yaml
index 38e1be6d..6b3f37e6 100644
--- a/buildsystem/spack/deception/spack.yaml
+++ b/buildsystem/spack/deception/spack.yaml
@@ -19,7 +19,7 @@ spack:
     exago:
       require: +raja+hiop+ipopt
     hiop:
-      require: '@1.0.0+sparse+mpi+ginkgo+kron'
+      require: '@develop+sparse+mpi+ginkgo+kron'
     magma:
       require: '@2.6.2'
     coinhsl:
diff --git a/buildsystem/spack/incline/spack.yaml b/buildsystem/spack/incline/spack.yaml
index 01844cc5..b77d1ec9 100644
--- a/buildsystem/spack/incline/spack.yaml
+++ b/buildsystem/spack/incline/spack.yaml
@@ -57,7 +57,7 @@ spack:
     hiop:
     # TODO - build with Ginkgo #463
     # TODO - updgrade to develop / 1.0.0 #28
-      require: '@1.0.0+sparse+mpi+raja+rocm~ginkgo+kron'
+      require: '@develop+sparse+mpi+raja+rocm~ginkgo+kron'
     ipopt:
       require: '@3.12.10~metis+coinhsl~mumps'
     # Pin version of OpenBlas for testing results
diff --git a/buildsystem/spack/newell/spack.yaml b/buildsystem/spack/newell/spack.yaml
index cd72511d..c8bdb312 100644
--- a/buildsystem/spack/newell/spack.yaml
+++ b/buildsystem/spack/newell/spack.yaml
@@ -19,7 +19,7 @@ spack:
     exago:
       require: +raja+hiop+ipopt
     hiop:
-      require: '@1.0.0+sparse+mpi+ginkgo+kron'
+      require: '@develop+sparse+mpi+ginkgo+kron'
     magma:
       require: '@2.6.2'
     coinhsl: