diff --git a/Project.toml b/Project.toml
index 32cbeb5f..756f2bf0 100644
--- a/Project.toml
+++ b/Project.toml
@@ -22,6 +22,7 @@ IntiVTKExt = "WriteVTK"
 
 [compat]
 Gmsh = "0.2"
+HMatrices = "0.2"
 SpecialFunctions = "2"
 StaticArrays = "1"
 WriteVTK = "1"