diff --git a/Project.toml b/Project.toml
index 2fbdd0bdf5..ee3eac25e8 100644
--- a/Project.toml
+++ b/Project.toml
@@ -49,7 +49,7 @@ CUDA = "5.5"
 ClimaComms = "0.6.2"
 CountFlops = "0.1"
 CubedSphere = "0.2, 0.3"
-DataStructures = "0.18.13"
+DataStructures = "0.18.13, 0.19"
 Dates = "1"
 FastBroadcast = "0.3.1"
 ForwardDiff = "0.10.15, 1"