diff --git a/Project.toml b/Project.toml
index 317f64f..4924d9d 100644
--- a/Project.toml
+++ b/Project.toml
@@ -7,6 +7,7 @@ InteractiveUtils = "b77e0a4c-d291-57a0-90e8-8db25a27a240"
 JSON = "682c06a0-de6a-54ab-a142-c8b1cf79cde6"
 
 [compat]
+JSON = "0.21"
 julia = "1.0"
 
 [extras]