diff --git a/Project.toml b/Project.toml
index 2ed1a36..0973527 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,7 +1,7 @@
 name = "OceanGrids"
 uuid = "cfe838f4-859f-11e9-2ea1-df7d4e7c3537"
 authors = ["Benoit Pasquier <pasquieb@uci.edu>"]
-version = "0.1.8"
+version = "0.1.9"
 
 [deps]
 Interpolations = "a98d9a8b-a2ab-59e6-89dd-64a1c18fca59"
@@ -10,7 +10,7 @@ SparseArrays = "2f01184e-e22b-5df5-ae63-d93ebab69eaf"
 Unitful = "1986cc42-f94f-5a68-af5c-568840ba703d"
 
 [compat]
-Unitful = "0.18"
+Unitful = "1"
 Interpolations = "0.12"
 julia = "1"