diff --git a/Project.toml b/Project.toml
index 3f00f24..e92f65e 100644
--- a/Project.toml
+++ b/Project.toml
@@ -25,8 +25,9 @@ Random = "9a3f8284-a2c9-5f02-9a11-845980a1fd5c"
 Statistics = "10745b16-79ce-11e8-11f9-7d13ad32a3b2"
 StatsBase = "2913bbd2-ae8a-5f71-8c99-4fb6c76f3a91"
 
-[sources]
-PythonOT = {rev = "main", url = "https://github.com/pnavaro/PythonOT.jl"}
+[sources.PythonOT]
+rev = "main"
+url = "https://github.com/pnavaro/PythonOT.jl"
 
 [compat]
 Aqua = "0.8"
@@ -43,7 +44,7 @@ Flux = "0.14, 0.15, 0.16"
 JSON = "0.21, 1"
 JuMP = "1"
 LinearAlgebra = "1"
-OrderedCollections = "1.8.0"
+OrderedCollections = "1.8.0, 2"
 PDMats = "0.11"
 Parameters = "0.12"
 Printf = "1"