diff --git a/test/Project.toml b/test/Project.toml
index 37cffef5..3d9e5ccd 100644
--- a/test/Project.toml
+++ b/test/Project.toml
@@ -35,7 +35,7 @@ pocl_jll = "627d6b7a-bbe6-5189-83e7-98cc0a5aeadd"
 Adapt = "4"
 BenchmarkTools = "1"
 CUDA = "5, 6"
-DiffEqDevTools = "2, 3"
+DiffEqDevTools = "2, 3, 4.0"
 DiffEqGPU = "3"
 ForwardDiff = "0.10.38, 1"
 GPUArraysCore = "0.2"