diff --git a/.github/workflows/Documenter.yml b/.github/workflows/Documenter.yml
index 129c41a3b5c..8f8d674ffa9 100644
--- a/.github/workflows/Documenter.yml
+++ b/.github/workflows/Documenter.yml
@@ -38,6 +38,7 @@ jobs:
         with:
           version: '1.9'
           show-versioninfo: true
+      - uses: julia-actions/cache@v1
       - uses: julia-actions/julia-buildpkg@v1
         env:
           PYTHON: ""