diff --git a/Project.toml b/Project.toml
index d7f9cd4a0..e12b5bf19 100644
--- a/Project.toml
+++ b/Project.toml
@@ -28,7 +28,7 @@ WriteVTK = "64499a7a-5c06-52f2-abe2-ccb03c286192"
 [compat]
 ArnoldiMethod = "0.0.4, 0.2"
 ChainRulesCore = "1"
-FLOWMath = "0.3"
+FLOWMath = "0.3, 0.4"
 FillArrays = "0.13, 1"
 ForwardDiff = "0.10"
 ImplicitAD = "0.3.1"