diff --git a/Project.toml b/Project.toml
index 492cf908..b27a43e1 100644
--- a/Project.toml
+++ b/Project.toml
@@ -30,6 +30,7 @@ Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 FLOWMath = "0.3"
 FastGaussQuadrature = "1"
 FiniteDiff = "2"
+FixedPoint = "1"
 ForwardDiff = "0.10"
 ImplicitAD = "0.3"
 IterativeSolvers = "0.9"