diff --git a/Project.toml b/Project.toml
index b889938..4968998 100644
--- a/Project.toml
+++ b/Project.toml
@@ -4,10 +4,12 @@ authors = ["Katharine Hyatt", "Matthew Fishman <mfishman@flatironinstitute.org>"
 version = "0.2.0"
 
 [deps]
+Adapt = "79e6a3ab-5dfb-504d-930d-738a2a938a0e"
 CUDA = "052768ef-5323-5732-b1bb-66c8b64840ba"
 ITensors = "9136182c-28ba-11e9-034c-db9fb085ebd5"
 
 [compat]
+Adapt = "4"
 CUDA = "4, 5"
 ITensors = "0.3, 0.4, 0.5"
 julia = "1.6"