diff --git a/Project.toml b/Project.toml
index 9d5fee7..b662e37 100644
--- a/Project.toml
+++ b/Project.toml
@@ -9,6 +9,7 @@ LinearAlgebra = "37e2e46d-f89d-539d-b4ee-838fcccc9c8e"
 Random = "9a3f8284-a2c9-5f02-9a11-845980a1fd5c"
 
 [compat]
+FFTW = "1"
 julia = "1.7"
 
 [extras]