add JSON upperbound

tanmaykm · tanmaykm · commit 7caf7c582d89 · 2019-12-23T13:42:32.000+05:30
diff --git a/Project.toml b/Project.toml
@@ -16,6 +16,7 @@ ZMQ = "c2297ded-f4af-51ae-bb23-16f91089e4e1"
 [compat]
 HTTP = "0.8"
 ZMQ = "1.0"
+JSON = "0.21"
 julia = "1"
 
 [extras]
