diff --git a/roles/calibre/defaults/main.yml b/roles/calibre/defaults/main.yml
index bdf88373f..ea148226f 100644
--- a/roles/calibre/defaults/main.yml
+++ b/roles/calibre/defaults/main.yml
@@ -21,9 +21,9 @@ calibre_src_url: "https://raw.githubusercontent.com/kovidgoyal/calibre/master/se
 
 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+dfsg-1
+# calibre_3.31.0+dfsg-1_all (25M, 2018-08-24)
+# calibre-bin_3.31.0+dfsg-1_armhf (742K, 2018-08-30)
+calibre_deb_pin_version: 3.31.0+dfsg-1
 
 # 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