diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index a362642..a1e8581 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -14,11 +14,16 @@ jobs:
           - 'nightly'
         os:
           - ubuntu-latest
+          - macOS-latest
         arch:
           - x64
     steps:
       - uses: actions/checkout@v2
-      - uses: julia-actions/setup-julia@v1
+      - uses: actions/checkout@v2
+      - uses: r-lib/actions/setup-r@v1
+      - run: echo "LD_LIBRARY_PATH=$(R RHOME)/lib" >> $GITHUB_ENV
+      - run: sudo R -e "install.packages('vegan', repos='http://cran.rstudio.com/')"
+      - uses: julia-actions/setup-julia@latest
         with:
           version: ${{ matrix.version }}
           arch: ${{ matrix.arch }}
@@ -32,8 +37,8 @@ jobs:
             ${{ runner.os }}-test-${{ env.cache-name }}-
             ${{ runner.os }}-test-
             ${{ runner.os }}-
-      - uses: julia-actions/julia-buildpkg@v1
-      - uses: julia-actions/julia-runtest@v1
+      - uses: julia-actions/julia-buildpkg@latest
+      - uses: julia-actions/julia-runtest@latest
       - uses: julia-actions/julia-processcoverage@v1
       - uses: codecov/codecov-action@v1
         with:
@@ -43,7 +48,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
-      - uses: julia-actions/setup-julia@v1
+      - uses: r-lib/actions/setup-r@v1
+      - run: echo "LD_LIBRARY_PATH=$(R RHOME)/lib" >> $GITHUB_ENV
+      - run: sudo R -e "install.packages('vegan', repos='http://cran.rstudio.com/')"
+      - uses: julia-actions/setup-julia@latest
         with:
           version: '1'
       - run: |
@@ -51,13 +59,7 @@ jobs:
             using Pkg
             Pkg.develop(PackageSpec(path=pwd()))
             Pkg.instantiate()'
-      - run: |
-          julia --project=docs -e '
-            using Documenter: DocMeta, doctest
-            using BetaDispersion
-            DocMeta.setdocmeta!(BetaDispersion, :DocTestSetup, :(using BetaDispersion); recursive=true)
-            doctest(BetaDispersion)'
       - run: julia --project=docs docs/make.jl
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-          DOCUMENTER_KEY: ${{ secrets.DOCUMENTER_KEY }}
+          DOCUMENTER_KEY: ${{ secrets.DOCUMENTER_KEY }}
\ No newline at end of file