diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 0b6bbb5..7373e35 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -50,4 +50,5 @@ jobs:
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           DOCUMENTER_KEY: ${{ secrets.DOCUMENTER_KEY }}
+          GKSwstype: '100'
         run: julia --project=docs --color=yes docs/make.jl