diff --git a/Project.toml b/Project.toml
index 2409bd5..2ad5cd5 100644
--- a/Project.toml
+++ b/Project.toml
@@ -41,6 +41,7 @@ NearestNeighbors = "b8a86587-4115-5ab1-83bc-aa920d37bbce"
 Nettle = "49dea1ee-f6fa-5aa6-9a11-8816cee7d4b9"
 OnlineStats = "a15396b6-48d5-5d58-9928-6d29437db91e"
 Optim = "429524aa-4258-5aef-a3af-852621145aeb"
+OrderedCollections = "bac558e1-5e72-5ebc-8fee-abe8a469f55d"
 PGFPlots = "3b7a836e-365b-5785-a47d-02c71176b4aa"
 Parameters = "d96e819e-fc66-5662-9728-84c9c7592b0a"
 ParserCombinator = "fae87a5f-d1ad-5cf0-8f61-c941e1580b46"
diff --git a/README.md b/README.md
index 4a3e41e..2dbaff0 100644
--- a/README.md
+++ b/README.md
@@ -150,6 +150,7 @@ this image.
 - [x] [Kelpie](https://github.com/MillironX/Kelpie.jl)
 - [x] [Mustache](https://github.com/jverzani/Mustache.jl)
 - [x] [HTTP](https://github.com/JuliaWeb/http.jl)
+- [x] [OrderedCollections](https://JuliaCollections/OrderedCollections.jl)
 
 [^1]: This image doesn't include Juno, just the curated packages.