diff --git a/test/Project.toml b/test/Project.toml
index c291fc0..0c64355 100644
--- a/test/Project.toml
+++ b/test/Project.toml
@@ -35,7 +35,7 @@ KrylovKit = "0.9.5, 0.10"
 LinearAlgebra = "1.10"
 NDTensors = "0.4.4"
 Observers = "0.2.5"
-OptimKit = "0.4"
+OptimKit = "0.4, 0.5"
 Random = "1.10"
 SafeTestsets = "0.1"
 StableRNGs = "1.0.2"