diff --git a/Project.toml b/Project.toml
index eb01a1e..3cc7c79 100644
--- a/Project.toml
+++ b/Project.toml
@@ -26,7 +26,7 @@ PlotUtils = "1.2.0"
 Plots = "1.26"
 RecipesBase = "1.2.1"
 Reexport = "0.2.0"
-Roots = "1.3"
+Roots = "1.3, 2"
 SpecialFunctions = "1.6.2"
 ViscousFlow = "0.5.1"
 julia = "1.6"