diff --git a/Project.toml b/Project.toml
index 178e998..7ed45e8 100644
--- a/Project.toml
+++ b/Project.toml
@@ -5,3 +5,10 @@ version = "0.1.0"
 
 [deps]
 Primes = "27ebfcd6-29c5-5fa9-bf4b-fb8fc14df3ae"
+
+[extras]
+Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
+LinearAlgebra = "37e2e46d-f89d-539d-b4ee-838fcccc9c8e"
+
+[targets]
+test = ["Test", "LinearAlgebra"]