diff --git a/Project.toml b/Project.toml
index b75d16a..75bf95a 100644
--- a/Project.toml
+++ b/Project.toml
@@ -37,6 +37,7 @@ UnitfulEquivalences = "da9c4bc3-91c8-4f02-8a40-6b990d2a7e0c"
 [compat]
 CSV = "0.8, 0.9, 0.10"
 DataFrames = "1"
+IJulia = "1"
 Peaks = "0.4"
 PhysicalConstants = "0.2"
 Unitful = "1"