diff --git a/Project.toml b/Project.toml
index c3b26a8..4cc6c06 100644
--- a/Project.toml
+++ b/Project.toml
@@ -18,6 +18,7 @@ StatsBase = "2913bbd2-ae8a-5f71-8c99-4fb6c76f3a91"
 [compat]
 FileIO = "1.8"
 MIDI = "2"
+Requires = "1"
 julia = "1"
 
 [extras]