diff --git a/Project.toml b/Project.toml
index b043da3..154a9b8 100644
--- a/Project.toml
+++ b/Project.toml
@@ -37,7 +37,7 @@ LogExpFunctions = "0.3"
 MacroTools = "0.5"
 NNlib = "0.8.14, 0.9"
 NaNMath = "1"
-Optimisers = "0.2.9, 0.3"
+Optimisers = "0.2.9, 0.3, 0.4"
 PDMats = "0.11"
 Printf = "1"
 Random = "1"