diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index 977c24b7..5e2dfec1 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -52,7 +52,9 @@ jobs:
           export JULIA_DEBUG=Documenter
           export PLOTDOCS_ANSICOLOR=true
           export GKSwstype=nul  # Plots.jl/issues/3664
+          export UP_DEBUG_IO=$(mktemp)
           xvfb-run julia --color=yes --project=docs/ -e 'using Pkg; Pkg.develop(PackageSpec(path=pwd())); Pkg.add(PackageSpec(name="Plots", rev=split(ENV["GITHUB_REF"], "/", limit=3)[3])); Pkg.instantiate()'
           # xvfb-run julia --color=yes --project=docs/ -e 'using Pkg; pkg"add Documenter#master"'
           xvfb-run julia --color=yes --project=docs/ -e 'using Pkg; pkg"st -m"'
-          xvfb-run julia --color=yes --project=docs/ -e 'withenv("GITHUB_REPOSITORY" => "JuliaPlots/PlotDocs.jl") do; include("docs/make.jl"); end' 
+          xvfb-run julia --color=yes --project=docs/ -e 'withenv("GITHUB_REPOSITORY" => "JuliaPlots/PlotDocs.jl") do; include("docs/make.jl"); end'
+          cat $UP_DEBUG_IO