diff --git a/Project.toml b/Project.toml
index ddfb1d22..ef63a2d8 100644
--- a/Project.toml
+++ b/Project.toml
@@ -20,7 +20,7 @@ UnitfulAtomic = "a7773ee8-282e-5fa2-be4e-bd808c38a91a"
 [compat]
 AbInitioSoftwareBase = "0.6.1, 0.8, 0.9"
 ConstructionBase = "1"
-Crystallography = "0.3, 0.4, 0.5"
+Crystallography = "0.3, 0.4, 0.5, 0.6"
 Functors = "0.2, 0.3, 0.4"
 OrderedCollections = "1"
 Setfield = "0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 1"