diff --git a/Project.toml b/Project.toml
index da14dd1..349e385 100644
--- a/Project.toml
+++ b/Project.toml
@@ -34,14 +34,14 @@ LabelledArrays = "1.6.1"
 NLopt = "0.6"
 NaNMath = "1"
 NodeJS = "2"
-OrdinaryDiffEq = "6.0 - 6.55"
+OrdinaryDiffEq = "6.0 - 6.55, 6"
 ProgressMeter = "1"
 RecipesBase = "1"
 RecursiveArrayTools = "2"
 Reexport = "1"
 Sundials = "4.16 - 4.19.3"
 XLSX = "0.7, 0.8"
-julia = "1.6 - 1.9"
+julia = "1.6"
 
 [extras]
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"