diff --git a/docs/Project.toml b/docs/Project.toml
index 58448d2..fd8229f 100644
--- a/docs/Project.toml
+++ b/docs/Project.toml
@@ -18,6 +18,7 @@ Zygote = "e88e6eb3-aa80-5325-afca-941959d7151f"
 ADTypes = "1.21.0"
 ComponentArrays = "0.15.31"
 Documenter = "1.3"
+FiniteDiff = "2.29.0"
 ForwardDiff = "1.3.1"
 Literate = "2.21.0"
 NLsolve = "4.5.1"