diff --git a/Project.toml b/Project.toml
index f425456..a33157e 100644
--- a/Project.toml
+++ b/Project.toml
@@ -56,7 +56,7 @@ DataInterpolations = "4.5, 5"
 EchelleCCFs = "0.2.8"
 EchelleInstruments = "0.2.10"
 FileIO = "1.4"
-JLD2 = "0.4"
+JLD2 = "0.4, 0.5"
 LsqFit = "0.12, 0.13"
 MD5 = "0.2"
 Missings = "0.4, 1"