diff --git a/.github/workflows/build_book_bioc_docker.yml b/.github/workflows/build_book_bioc_docker.yml
index 39ded24..9d9ec29 100644
--- a/.github/workflows/build_book_bioc_docker.yml
+++ b/.github/workflows/build_book_bioc_docker.yml
@@ -48,7 +48,7 @@ jobs:
       matrix:
         config:
           - { os: ubuntu-latest, r: '4.1', bioc: '3.13', cont: "bioconductor/bioconductor_docker:RELEASE_3_13", rspm: "https://packagemanager.rstudio.com/cran/__linux__/focal/latest" }
-          #- { os: macOS-latest, r: '4.1', bioc: '3.13'}
+          - { os: macOS-latest, r: '4.1', bioc: '3.13'}
           - { os: windows-latest, r: '4.1', bioc: '3.13'}
           ## Check https://github.com/r-lib/actions/tree/master/examples
           ## for examples using the http-user-agent