diff --git a/Project.toml b/Project.toml
index f4d0ae4..95af92e 100644
--- a/Project.toml
+++ b/Project.toml
@@ -29,7 +29,7 @@ ProgressMeter = "1"
 PyCall = "1"
 Reexport = "1"
 Revise = "3"
-Sleipnir = "0.3"
+Sleipnir = "0.2, 0.3"
 Tullio = "0.3"
 
 [extras]