diff --git a/docs/Project.toml b/docs/Project.toml
index 488e1c7c..40fec16f 100644
--- a/docs/Project.toml
+++ b/docs/Project.toml
@@ -14,6 +14,6 @@ Cubature = "1"
 Distributions = "0.25"
 Documenter = "1"
 FiniteDiff = "2"
-ForwardDiff = "0.10"
+ForwardDiff = "0.10, 1"
 Integrals = "3, 4"
 Zygote = "0.6, 0.7"