diff --git a/docs/Project.toml b/docs/Project.toml
index 4a95e33df..3559510a1 100644
--- a/docs/Project.toml
+++ b/docs/Project.toml
@@ -87,3 +87,4 @@ SymbolicAnalysis = "0.3"
 Symbolics = "6"
 Tracker = ">= 0.2"
 Zygote = ">= 0.5"
+BlackBoxOptim = "0.6"