diff --git a/Project.toml b/Project.toml
index aadd79b..ad77f15 100644
--- a/Project.toml
+++ b/Project.toml
@@ -33,7 +33,7 @@ Unicode = "4ec0a83e-493e-50e2-b9ac-8f72acf5a8f5"
 
 [compat]
 CSV = "0.10.15"
-CategoricalArrays = "0.10.9"
+CategoricalArrays = "0.10.9, 1"
 Chain = "0.6.0"
 Cleaner = "1.1.1"
 Conda = "1.10.2"