diff --git a/Project.toml b/Project.toml
index 1437c744..3269a071 100644
--- a/Project.toml
+++ b/Project.toml
@@ -49,7 +49,7 @@ DensityInterface = "0.4"
 Distributions = "0.25"
 DynamicIterators = "0.4"
 FillArrays = "1"
-ForwardDiff = "0.10"
+ForwardDiff = "0.10, 1"
 IfElse = "0.1"
 Infinities = "0.1"
 InverseFunctions = "0.1"