diff --git a/roles/calibre/tasks/debs.yml b/roles/calibre/tasks/debs.yml
index 0d13d9b9d..ea19185f7 100644
--- a/roles/calibre/tasks/debs.yml
+++ b/roles/calibre/tasks/debs.yml
@@ -28,7 +28,8 @@
 #  when: is_rpi and internet_available
 
 - name: Upgrade to latest Calibre using .deb's from testing (rpi)
-  command: scripts/calibre-install-latest-rpi.sh    # SEEMS TO ONCE AGAIN WORK since Calibre 3.26.0 (Calibre 3.24-3.25 required above prereq calibre-install-packages.sh then Debian's own calibre-install-latest.sh to be bootable in Zero W)
+  command: scripts/calibre-install-latest-rpi-plus.sh    # for Calibre 3.27.1+ starting 2018-07-22 -- PLEASE TEST IF BOOTABLE IN Zero W?
+  #command: scripts/calibre-install-latest-rpi.sh    # SEEMS TO ONCE AGAIN WORK since Calibre 3.26.0 (Calibre 3.24-3.25 required above prereq calibre-install-packages.sh then Debian's own calibre-install-latest.sh to be bootable in Zero W)
   when: is_rpi and internet_available
 
 - name: Upgrade to Calibre testing .deb's - target Ubuntu 16.04 (not rpi and not ubuntu_18)