diff --git a/docs/Project.toml b/docs/Project.toml
index 895875b2..83c95aa5 100644
--- a/docs/Project.toml
+++ b/docs/Project.toml
@@ -7,4 +7,5 @@ Plots = "91a5bcdd-55d7-5caf-9e0b-520d859cae80"
 [compat]
 Documenter = "0.27"
 ForwardDiff = "0.10"
+Pathfinder = "0.4"
 Plots = "1"