diff --git a/Project.toml b/Project.toml
index 074dddbd..fb5d1921 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,7 +1,7 @@
 name = "ITensorNetworks"
 uuid = "2919e153-833c-4bdc-8836-1ea460a35fc7"
 authors = ["Matthew Fishman <mfishman@flatironinstitute.org>, Joseph Tindall <jtindall@flatironinstitute.org> and contributors"]
-version = "0.11.20"
+version = "0.11.21"
 
 [deps]
 AbstractTrees = "1520ce14-60c1-5f80-bbc7-55ef81b5835c"
@@ -75,7 +75,7 @@ Observers = "0.2.4"
 PackageExtensionCompat = "1"
 SerializedElementArrays = "0.1"
 SimpleTraits = "0.9"
-SparseArrayKit = "0.3"
+SparseArrayKit = "0.3, 0.4"
 SplitApplyCombine = "1.2"
 StaticArrays = "1.5.12"
 StructWalk = "0.2"