diff --git a/Project.toml b/Project.toml
index b12cdbf..b795b08 100644
--- a/Project.toml
+++ b/Project.toml
@@ -29,7 +29,7 @@ CuArrays = "2.0"
 DSP = "0.6"
 DataFrames = "0.20, 0.21"
 FFTW = "1.1"
-GPUArrays = "3.1"
+GPUArrays = "3.1, 4.0"
 Glob = "1.2"
 JLD2 = "0.1"
 Plots = "0.29, 1.0"