diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index bc93431..39f6e20 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -18,6 +18,7 @@ jobs:
       fail-fast: false
       matrix:
         version:
+          - '1.9'
           - '1.10'
         os:
           - ubuntu-latest
diff --git a/Project.toml b/Project.toml
index 5f8e1e3..4499cf8 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,7 +1,7 @@
 authors = ["jeremiedb <jeremie.db@evovest.com>"]
 name = "NeuroTreeModels"
 uuid = "1db4e0a5-a364-4b0c-897c-2bd5a4a3a1f2"
-version = "1.1.1"
+version = "1.1.2"
 
 [deps]
 CUDA = "052768ef-5323-5732-b1bb-66c8b64840ba"
@@ -24,13 +24,13 @@ DataFrames = "1.3"
 Flux = "0.13, 0.14"
 MLJModelInterface = "1.0"
 MLUtils = "0.4"
-Optimisers = "0.2, 0.3"
+Optimisers = "0.3"
 Random = "1"
 Statistics = "1"
 StatsBase = "0.34"
 Tables = "1.9"
 cuDNN = "1"
-julia = "1.6"
+julia = "1.9"
 
 [extras]
 CategoricalArrays = "324d7699-5711-5eae-9e2f-1d82baa6b597"
diff --git a/README.md b/README.md
index e7e66f8..8a6234e 100644
--- a/README.md
+++ b/README.md
@@ -17,10 +17,12 @@
 
 ## Installation
 
-```julia
+```julia-repl
 ] add NeuroTreeModels
 ```
 
+⚠ Compatible with Julia >= v1.9.
+
 ## Configuring a model
 
 A model configuration is defined with the [NeuroTreeRegressor](https://evovest.github.io/NeuroTreeModels.jl/dev/models#NeuroTreeModels.NeuroTreeRegressor) constructor:
diff --git a/src/MLJ.jl b/src/MLJ.jl
index 95c1c4c..78da31a 100644
--- a/src/MLJ.jl
+++ b/src/MLJ.jl
@@ -68,9 +68,6 @@ function MMI.predict(::NeuroTreeRegressor, fitresult, A)
   return pred
 end
 
-MMI.supports_weights(::Type{<:NeuroTreeRegressor}) = true
-
-
 # Metadata
 MMI.metadata_pkg.(
   (NeuroTreeRegressor),