diff --git a/Project.toml b/Project.toml
index 6a3f6f5..9cad610 100644
--- a/Project.toml
+++ b/Project.toml
@@ -10,7 +10,7 @@ Reexport = "189a3867-3050-52da-a836-e630ba90ab69"
 SimpleTraits = "699a6c99-e7fa-54fc-8d76-47d257e15c1d"
 
 [compat]
-AxisArrays = "0.3"
+AxisArrays = "0.3, 0.4"
 ImageCore = "0.8.1"
 MappedArrays = "0.2"
 Reexport = "0.2"