diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 7314122..70f2407 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -15,7 +15,7 @@ jobs:
       fail-fast: false
       matrix:
         version:
-          - '1.8' # Replace this with the minimum Julia version that your package supports. E.g. if your package requires Julia 1.5 or higher, change this to '1.5'.
+          - '1.9' # Replace this with the minimum Julia version that your package supports. E.g. if your package requires Julia 1.5 or higher, change this to '1.5'.
           - '1' # Leave this line unchanged. '1' will automatically expand to the latest stable 1.x release of Julia.
           #- 'nightly'
         os:
@@ -51,7 +51,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: julia-actions/setup-julia@v1
         with:
-          version: '1.8'
+          version: '1.9'
       - run: |
           julia --project=docs -e '
             using Pkg
@@ -60,4 +60,4 @@ jobs:
       - run: julia --project=docs docs/make.jl
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-          DOCUMENTER_KEY: ${{ secrets.DOCUMENTER_KEY }}
\ No newline at end of file
+          DOCUMENTER_KEY: ${{ secrets.DOCUMENTER_KEY }}