diff --git a/question/type/ordering/readme.txt b/question/type/ordering/readme.txt
index c63045aacfa..d1a9203715e 100644
--- a/question/type/ordering/readme.txt
+++ b/question/type/ordering/readme.txt
@@ -63,4 +63,11 @@ were undertaken by Vadim Dvorovenko (Kemerovo State University of Culture and Ar
 Development of "relative to correct" grading method commissioned by Anatoliy Markiv and
 sponsored by Kings College London, UK.
 
+Code for privacy and automatic testing was added by Tim Hunt and Mahmoud Kassaei of Open
+University, UK.
+
+Thanks also to Dominique Bauer (ETS, University of Quebec, Canada) for his help and ideas
+in testing the "Item selection type" and "Grading type", particularly the "Longest
+ordered/contiguous subset" grading type.
+
 many thanks to all concerned!
diff --git a/question/type/ordering/version.php b/question/type/ordering/version.php
index 2717af09553..d3afc260259 100644
--- a/question/type/ordering/version.php
+++ b/question/type/ordering/version.php
@@ -29,5 +29,5 @@ $plugin->cron      = 0;
 $plugin->component = 'qtype_ordering';
 $plugin->maturity  = MATURITY_STABLE;
 $plugin->requires  = 2010112400; // Moodle 2.0
-$plugin->version   = 2018122281;
-$plugin->release   = '2018-12-22 (81)';
+$plugin->version   = 2018122682;
+$plugin->release   = '2018-12-26 (82)';