diff --git a/Project.toml b/Project.toml
index 0dec9d364..ef1b398be 100644
--- a/Project.toml
+++ b/Project.toml
@@ -48,6 +48,7 @@ DataStructures = "0.18"
 Distributions = "0.25"
 GraphViz = "0.2"
 Graphs = "1"
+JSON3 = "1"
 MacroTools = "0.5"
 MemPool = "0.4.6"
 OnlineStats = "1"