diff --git a/Project.toml b/Project.toml
index f0c99d9..2e9bf7b 100644
--- a/Project.toml
+++ b/Project.toml
@@ -54,7 +54,7 @@ BSON = "0.3"
 BinningAnalysis = "0.5"
 CSV = "0.8, 0.9"
 DataFrames = "0.21,0.22, 1.0"
-DataStructures = "0.18"
+DataStructures = "0.18, 0.19"
 Distributions = "0.24, 0.25"
 DrWatson = "1.16, 2.0"
 FFTW = "1.2"