diff --git a/Project.toml b/Project.toml
index b01239d091..e8a8aad4a8 100644
--- a/Project.toml
+++ b/Project.toml
@@ -84,7 +84,7 @@ DynamicQuantities = "^0.11.2, 0.12, 0.13"
 ExprTools = "0.1.10"
 Expronicon = "0.8"
 FindFirstFunctions = "1"
-ForwardDiff = "0.10.3"
+ForwardDiff = "0.10.3, 1"
 FunctionWrappersWrappers = "0.1"
 Graphs = "1.5.2"
 InteractiveUtils = "1"