diff --git a/MPI/OPAL/1.5/variants b/MPI/OPAL/1.5/variants
index 5fd4933..c5b189d 100644
--- a/MPI/OPAL/1.5/variants
+++ b/MPI/OPAL/1.5/variants
@@ -1,2 +1,4 @@
 OPAL/1.5.0-20161209	unstable gcc/5.4.0 openmpi/1.10.4 dks/1.0.1 boost/1.62.0 hdf5/1.8.18 H5hut/2.0.0rc3 gsl/2.2.1 trilinos/12.10.1 cuda/8.0.44 b:cmake/3.6.3 b:OpenBLAS/0.2.19
+OPAL/1.5.0-20170126	unstable gcc/5.4.0 openmpi/1.10.4 dks/1.0.1 boost/1.62.0 hdf5/1.8.18 H5hut/2.0.0rc3 gsl/2.2.1 trilinos/12.10.1 cuda/8.0.44 b:cmake/3.6.3 b:OpenBLAS/0.2.19
+OPAL/1.5.1-20170210	unstable gcc/5.4.0 openmpi/1.10.4 dks/1.0.1 boost/1.62.0 hdf5/1.8.18 H5hut/2.0.0rc3 gsl/2.2.1 trilinos/12.10.1 cuda/8.0.44 b:cmake/3.6.3 b:OpenBLAS/0.2.19
 
diff --git a/MPI/OPAL/1.5/variants.Darwin b/MPI/OPAL/1.5/variants.Darwin
new file mode 100644
index 0000000..21a8598
--- /dev/null
+++ b/MPI/OPAL/1.5/variants.Darwin
@@ -0,0 +1,2 @@
+OPAL/1.5.0-20170126	unstable gcc/5.4.0 openmpi/1.10.4 boost/1.62.0 hdf5/1.8.18 H5hut/2.0.0rc3 gsl/2.2.1 trilinos/12.10.1 b:cmake/3.6.3 b:OpenBLAS/0.2.19
+