diff --git a/test/Project.toml b/test/Project.toml
index 95086f7..2461a5a 100644
--- a/test/Project.toml
+++ b/test/Project.toml
@@ -17,6 +17,7 @@ ADNLPModels = "0.8"
 Aqua = "0.8"
 CTBase = "0.17"
 ExaModels = "0.9"
+JSON3 = "1"
 NLPModels = "0.21"
 OrderedCollections = "1.8"
 Plots = "1"