diff --git a/Project.toml b/Project.toml
index 77d76729..11d40d6a 100644
--- a/Project.toml
+++ b/Project.toml
@@ -18,6 +18,7 @@ StaticArrays = "90137ffa-7385-5640-81b9-e52037218182"
 WriteVTK = "64499a7a-5c06-52f2-abe2-ccb03c286192"
 
 [compat]
+ForwardDiff = "0.10"
 Gmsh = "0.3"
 IterativeSolvers = "0.9"
 MPI = "0.20"