diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 969cc9bd..3c3e6c94 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -18,7 +18,7 @@ jobs:
         group:
           - Core
         version:
-          - '1.6'
+          - '1.9'
     steps:
       - uses: actions/checkout@v4
       - uses: julia-actions/setup-julia@v1
diff --git a/.github/workflows/Downgrade.yml b/.github/workflows/Downgrade.yml
new file mode 100644
index 00000000..01ff8cad
--- /dev/null
+++ b/.github/workflows/Downgrade.yml
@@ -0,0 +1,29 @@
+name: Downgrade
+on:
+  pull_request:
+    branches:
+      - master
+    paths-ignore:
+      - 'docs/**'
+  push:
+    branches:
+      - master
+    paths-ignore:
+      - 'docs/**'
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        version: ['1']
+    steps:
+      - uses: actions/checkout@v4
+      - uses: julia-actions/setup-julia@v1
+        with:
+          version: ${{ matrix.version }}
+      - uses: cjdoris/julia-downgrade-compat-action@v1
+#        if: ${{ matrix.version == '1.6' }}
+        with:
+          skip: Pkg,TOML
+      - uses: julia-actions/julia-buildpkg@v1
+      - uses: julia-actions/julia-runtest@v1
\ No newline at end of file
diff --git a/Project.toml b/Project.toml
index 96d909c6..865c3d05 100644
--- a/Project.toml
+++ b/Project.toml
@@ -22,16 +22,16 @@ Aqua = "0.8"
 CellularAutomata = "0.0.2"
 DifferentialEquations = "7"
 Distances = "0.10"
-Distributions = "0.24, 0.25"
+Distributions = "0.24.5, 0.25"
 LIBSVM = "0.8"
-LinearAlgebra = "1"
-MLJLinearModels = "0.5, 0.6, 0.7, 0.8, 0.9"
+LinearAlgebra = "1.9"
+MLJLinearModels = "0.9.2"
 NNlib = "0.8.4, 0.9"
 Optim = "1"
 Random = "1"
 SafeTestsets = "0.1"
-SparseArrays = "1"
-Statistics = "1"
+SparseArrays = "1.9"
+Statistics = "1.9"
 Test = "1"
 julia = "1.6"