diff --git a/.github/workflows/documentation.yml b/.github/workflows/documentation.yml
index 3b5130f..de9bbdf 100644
--- a/.github/workflows/documentation.yml
+++ b/.github/workflows/documentation.yml
@@ -15,7 +15,7 @@ jobs:
       - uses: actions/checkout@v2
       - uses: julia-actions/setup-julia@v1
       - name: Install dependencies
-        run: julia --color=yes --project=docs/ -e 'using Pkg; Pkg.develop(; path = pwd()); Pkg.instantiate()'
+        run: julia --color=yes --project=docs/ -e 'using Pkg; Pkg.develop(PackageSpec(path=pwd())); Pkg.instantiate()'
       - name: Build and deploy
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}