diff --git a/Project.toml b/Project.toml
index af39d46..80a4adc 100644
--- a/Project.toml
+++ b/Project.toml
@@ -10,7 +10,7 @@ JSON = "682c06a0-de6a-54ab-a142-c8b1cf79cde6"
 
 [compat]
 CSV = "^0.5.12"
-DataFrames = "^0.19.4"
+DataFrames = "^0.19.4, 0.20"
 HTTP = "^0.8.6"
 JSON = "^0.21"
 julia = "1"