diff --git a/test/Project.toml b/test/Project.toml
index e6dea99..27f2dc9 100644
--- a/test/Project.toml
+++ b/test/Project.toml
@@ -17,4 +17,4 @@ Distributed = "1"
 ImageCore = "0.9, 0.10"
 MLUtils = "0.4.11"
 PythonCall = "0.9"
-Serialization = "1"
+Serialization = "1, < 0.0.1"