diff --git a/DifferentiationInterfaceTest/Project.toml b/DifferentiationInterfaceTest/Project.toml
index bfa84d4b4..78a29749d 100644
--- a/DifferentiationInterfaceTest/Project.toml
+++ b/DifferentiationInterfaceTest/Project.toml
@@ -46,7 +46,7 @@ DifferentiationInterface = "0.6.0"
 DocStringExtensions = "0.8,0.9"
 ExplicitImports = "1.10.1"
 FiniteDifferences = "0.12"
-Flux = "0.13,0.14"
+Flux = "0.13,0.14, 0.15"
 ForwardDiff = "0.10.36"
 Functors = "0.4, 0.5"
 JET = "0.4 - 0.8, 0.9"