diff --git a/lectures/lecturecommon.sty b/lectures/lecturecommon.sty
index 3af8779..c461ac5 100644
--- a/lectures/lecturecommon.sty
+++ b/lectures/lecturecommon.sty
@@ -1,4 +1,4 @@
-\def\filedate{13 June 2019}
+\def\filedate{27 October 2022}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 %
 % Common definitions shared across the various lecture document classes.
@@ -19,65 +19,19 @@
 % v1.2.5 Disabled Mapping=tex-text for mono font to eliminate automatic curly quotes.
 % v1.2.6 Enabled unicode option for hyperref when using Xe(La)TeX.
 % v1.2.7 Reverted unicode option for hyperref due to option clash error.
+% v1.3   Switched to otagofonts.sty for font configuration.
 %
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
 \NeedsTeXFormat{LaTeX2e}[2001/06/01]
-\ProvidesPackage{lecturecommon}[2019/06/13 INFO standard lecture setup v1.2.7]
+\ProvidesPackage{lecturecommon}[2022/10/27 INFO standard lecture setup v1.3]
 
 
 % Standard packages common to ALL lecture documents.
 
 \RequirePackage{amsmath} % needs to be loaded before mathspec
 
-\RequirePackage{ifxetex}
-
-\ifxetex
-
-\RequirePackage[no-math]{fontspec}
-\RequirePackage{mathspec}
-\RequirePackage{xunicode}
-\RequirePackage{xltxtra}
-
-% The following line is equivalent to:
-%   \setmainfont{Minion Pro}
-%   \setmathsfont(Latin,Digits){Minion Pro}
-%   \setmathrm{Minion Pro}
-\setprimaryfont[Mapping=tex-text]{Minion Pro}
-\setsansfont[Mapping=tex-text, Scale=MatchUppercase, BoldFont={Open Sans}]{Open Sans Light}
-% Explicitly specify Mapping=tex-text only for the primary and sans fonts,
-% otherwise curly quotes will automatically appear in the mono font. Since
-% this is pretty much exclusively used for code listings, this is a bad thing.
-\setmonofont[Scale=MatchLowercase]{Letter Gothic 12 Pitch}
-
-% Hack to prevent digits in hyperlinks from being set in the main font instead of the mono font.
-% From http://tex.stackexchange.com/questions/99770/problem-with-digits-in-urls-when-using-mathspec-and-hyperref
-% Note: doesn't matter if this is executed multiple times.
-\makeatletter
-     \DeclareMathSymbol{0}{\mathalpha}{\eu@DigitsArabic@symfont}{`0}
-     \DeclareMathSymbol{1}{\mathalpha}{\eu@DigitsArabic@symfont}{`1}
-     \DeclareMathSymbol{2}{\mathalpha}{\eu@DigitsArabic@symfont}{`2}
-     \DeclareMathSymbol{3}{\mathalpha}{\eu@DigitsArabic@symfont}{`3}
-     \DeclareMathSymbol{4}{\mathalpha}{\eu@DigitsArabic@symfont}{`4}
-     \DeclareMathSymbol{5}{\mathalpha}{\eu@DigitsArabic@symfont}{`5}
-     \DeclareMathSymbol{6}{\mathalpha}{\eu@DigitsArabic@symfont}{`6}
-     \DeclareMathSymbol{7}{\mathalpha}{\eu@DigitsArabic@symfont}{`7}
-     \DeclareMathSymbol{8}{\mathalpha}{\eu@DigitsArabic@symfont}{`8}
-     \DeclareMathSymbol{9}{\mathalpha}{\eu@DigitsArabic@symfont}{`9}
-\makeatother
-
-\else % assume PDFLaTeX otherwise
-
-\RequirePackage[T1]{fontenc}
-\RequirePackage{textcomp}
-\RequirePackage{lmodern}
-\RequirePackage{mathpazo}
-
-% Gill Sans to come...
-% \renewcommand{\sfdefault}{}
-\renewcommand{\ttdefault}{blg}
-
-\fi
+\RequirePackage{otagofonts}
 
 \RequirePackage{boxedminipage}
 \RequirePackage{graphicx}