diff --git a/Project.toml b/Project.toml
index 8d9c048..1958504 100644
--- a/Project.toml
+++ b/Project.toml
@@ -15,7 +15,7 @@ StaticArrays = "90137ffa-7385-5640-81b9-e52037218182"
 
 [compat]
 Accessors = "^0.1"
-BlockArrays = "0.16"
+BlockArrays = "0.16, 1"
 BlockDiagonals = "^0.1.42"
 MultipleScattering = "^0.1.19"
 RecipesBase = "1"