diff --git a/Project.toml b/Project.toml
index 8b58c3af20..1d813cf068 100644
--- a/Project.toml
+++ b/Project.toml
@@ -20,7 +20,7 @@ BenchmarkTools = "0.4, 0.5"
 CodecBzip2 = "~0.6, 0.7"
 CodecZlib = "~0.6, 0.7"
 JSON = "~0.21"
-JSONSchema = "0.2"
+JSONSchema = "0.2, 0.3"
 MutableArithmetics = "0.2"
 OrderedCollections = "1"
 julia = "1"