diff --git a/Project.toml b/Project.toml
index 0d42c72..211a2e7 100644
--- a/Project.toml
+++ b/Project.toml
@@ -5,7 +5,6 @@ authors = ["Qingyu Qu <erikqqy123@gmail.com>"]
 version = "0.1.3"
 
 [deps]
-FFTW = "7a1cc6ca-52ef-59f5-83cd-3a7055c09341"
 InvertedIndices = "41ab1584-1d38-5bbf-9106-f11c6c58b48f"
 LinearAlgebra = "37e2e46d-f89d-539d-b4ee-838fcccc9c8e"
 QuadGK = "1fd47b50-473d-5c70-9696-f719f8f3bcdc"