diff --git a/Project.toml b/Project.toml
index abc8c87..6058003 100644
--- a/Project.toml
+++ b/Project.toml
@@ -13,7 +13,7 @@ Zarr = "0a941bbe-ad1d-11e8-39d9-ab76183a1d99"
 [compat]
 CommonDataModel = "0.3.5"
 DataStructures = "0.17, 0.18"
-DiskArrays = "0.3.22"
+DiskArrays = "0.3.22, 0.4"
 JSON = "0.21"
 Zarr = "0.9.2"
 julia = "1"