diff --git a/Project.toml b/Project.toml
index ca6a841..5449ba6 100644
--- a/Project.toml
+++ b/Project.toml
@@ -3,7 +3,15 @@ uuid = "bbdedc48-cb31-4a37-9fe3-b015aecc8dd3"
 authors = ["Chenyang Yuan <yuanchenyang@gmail.com>"]
 version = "0.1.0"
 
+[compat]
+julia = "1"
+FFTW = "1"
+
 [deps]
-Documenter = "e30172f5-a6a5-5a46-863b-614d45cd2de4"
 FFTW = "7a1cc6ca-52ef-59f5-83cd-3a7055c09341"
+
+[extras]
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
+
+[targets]
+test = ["Test"]
\ No newline at end of file