diff --git a/.github/workflows/CompatHelper.yml b/.github/workflows/CompatHelper.yml
index 92c0519266..a8d5a89a9a 100644
--- a/.github/workflows/CompatHelper.yml
+++ b/.github/workflows/CompatHelper.yml
@@ -23,4 +23,4 @@ jobs:
       - name: CompatHelper.main()
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        run: julia -e 'using CompatHelper; CompatHelper.main(;subdirs=["", "docs", "test/downstream"])'
+        run: julia -e 'using CompatHelper; CompatHelper.main(;subdirs=["", "docs", "test/downstream", "lib"])'