diff --git a/Project.toml b/Project.toml
index c969206..5304b9f 100644
--- a/Project.toml
+++ b/Project.toml
@@ -25,6 +25,7 @@ Statistics = "10745b16-79ce-11e8-11f9-7d13ad32a3b2"
 StochasticRounding = "3843c9a1-1f18-49ff-9d99-1b4c8a8e97ed"
 
 [compat]
+CUDA = "4"
 julia = "1.6"
 
 [extras]