diff --git a/Project.toml b/Project.toml
index 413260c..c95ae39 100644
--- a/Project.toml
+++ b/Project.toml
@@ -9,7 +9,7 @@ Sockets = "6462fe0b-24de-5631-8697-dd941f90decc"
 
 [compat]
 julia = "^1"
-DataStructures = "^0"
+DataStructures = "^0.18"
 
 [extras]
 Dates = "ade2ca70-3891-5945-98fb-dc099432e06a"