diff --git a/Project.toml b/Project.toml
index d3c9f26..9050d83 100644
--- a/Project.toml
+++ b/Project.toml
@@ -15,6 +15,7 @@ Statistics = "10745b16-79ce-11e8-11f9-7d13ad32a3b2"
 [compat]
 Documenter = "0.27"
 DocumenterTools = "0.1"
+SHA = "0.7"
 julia = "1"
 
 [extras]