diff --git a/Project.toml b/Project.toml
index b03b3e5..7c4237d 100644
--- a/Project.toml
+++ b/Project.toml
@@ -29,7 +29,7 @@ CondaPkg = "0.2"
 DataFrames = "1"
 Downloads = "1"
 HTTP = "1"
-JSON = "0.21"
+JSON = "0.21, 1"
 NetworkOptions = "1.2.0"
 PythonCall = "0.9"
 Tar = "1"