diff --git a/roles/calibre/defaults/main.yml b/roles/calibre/defaults/main.yml
index 6a068d101..effe32dc4 100644
--- a/roles/calibre/defaults/main.yml
+++ b/roles/calibre/defaults/main.yml
@@ -19,10 +19,11 @@ calibre_sample_book: "Metamorphosis-jackson.epub"
 
 calibre_src_url: "https://raw.githubusercontent.com/kovidgoyal/calibre/master/setup/linux-installer.py"
 
-calibre_deb_url: http://download.iiab.io/packages/
-#calibre_3.30.0+dfsg-1_all
-#calibre-bin_3.30.0+dfsg-1_armhf
-calibre_deb_version: 3.30.0
+calibre_deb_url: http://download.iiab.io/packages
+# Must contain both packages for the pinned version, formatted as follows:
+# calibre_3.30.0+dfsg-1_all (25M, 2018-08-24)
+# calibre-bin_3.30.0+dfsg-1_armhf (742K, 2018-08-30)
+calibre_deb_pin_version: 3.30.0
 
 # USE TO TEST debs.yml (RASPBIAN APPROACH!) ON DEBIAN 9.X: (now handled by calibre_via_debs in /opt/iiab/iiab/vars/*)
 #calibre_debs_on_debian: True