diff --git a/Compiler/hdf5_serial/1/variants b/Compiler/hdf5_serial/1/variants
index cd4bcbd..8871464 100644
--- a/Compiler/hdf5_serial/1/variants
+++ b/Compiler/hdf5_serial/1/variants
@@ -23,6 +23,13 @@ hdf5_serial/1.8.16	stable		gcc/6.1.0
 hdf5_serial/1.8.17	stable		gcc/4.7.4 
 hdf5_serial/1.8.17	stable		gcc/4.8.5 
 hdf5_serial/1.8.17	stable		gcc/4.9.3 
+hdf5_serial/1.8.17	stable		gcc/4.9.4 
 hdf5_serial/1.8.17	stable		gcc/5.3.0 
+hdf5_serial/1.8.17	stable		gcc/5.4.0 
 hdf5_serial/1.8.17	stable		gcc/6.1.0
-hdf5_serial/1.8.17	unstable	gcc/6.2.0
+hdf5_serial/1.8.17	stable		gcc/6.2.0
+
+hdf5_serial/1.8.18	unstable	gcc/4.8.5 
+hdf5_serial/1.8.18	unstable	gcc/4.9.4 
+hdf5_serial/1.8.18	unstable	gcc/5.4.0 
+hdf5_serial/1.8.18	unstable	gcc/6.2.0