diff --git a/Project.toml b/Project.toml
index b3571d7..da4d818 100644
--- a/Project.toml
+++ b/Project.toml
@@ -21,12 +21,12 @@ UnPack = "3a884ed6-31ef-47d7-9d2a-63182c4928ed"
 BEASTXMLConstructor = "0.1.4, 0.2"
 BeastUtils = "0.1.5"
 CSV = "0.8, 0.9, 0.10"
-DataFrames = "0.20, 0.21, 0.22, 1.0"
-EzXML = "1.0, 1.1"
+DataFrames = "0.20, 0.21, 0.22, 1"
+EzXML = "1"
 JLD = "0.9, 0.10, 0.12, 0.13"
 RCall = "0.13"
-UnPack = "1.0"
-julia = "1.3, 1.4, 1.5, 1.6, 1.7"
+UnPack = "1"
+julia = "^1.3"
 
 [extras]
 SafeTestsets = "1bc83da4-3b8d-516f-aca4-4fe02f6d838f"