diff --git a/Project.toml b/Project.toml
index 6634ad9..6ead1f3 100644
--- a/Project.toml
+++ b/Project.toml
@@ -44,6 +44,7 @@ MINPACK = "1"
 NLsolve = "4"
 PreallocationTools = "0.4"
 QuadGK = "2"
+Roots = "2"
 SIAMFANLEquations = "1"
 SimpleNonlinearSolve = "1, 2"
 SpecialFunctions = "2"