diff --git a/Project.toml b/Project.toml
index bfe139e75..a79fe63a9 100644
--- a/Project.toml
+++ b/Project.toml
@@ -47,7 +47,7 @@ DataFrames = "0.22"
 Distributions = "0.24"
 FileIO = "1.6"
 ForwardDiff = "0.10"
-HTTP = "0.8"
+HTTP = "0.8, 0.9"
 ImageView = "0.10"
 Images = "0.23"
 Ipopt = "0.6"