diff --git a/Project.toml b/Project.toml
index 6cf6b89d..7dd20bcc 100644
--- a/Project.toml
+++ b/Project.toml
@@ -7,6 +7,9 @@ version = "0.1.0"
 InteractiveUtils = "b77e0a4c-d291-57a0-90e8-8db25a27a240"
 Statistics = "10745b16-79ce-11e8-11f9-7d13ad32a3b2"
 
+[compat]
+julia = 1.6
+
 [extras]
 SparseArrays = "2f01184e-e22b-5df5-ae63-d93ebab69eaf"
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"