diff --git a/lectures/lectureslides.cls b/lectures/lectureslides.cls
index a85f03b..3655aa1 100644
--- a/lectures/lectureslides.cls
+++ b/lectures/lectureslides.cls
@@ -1,4 +1,4 @@
-\def\filedate{17 May 2019}
+\def\filedate{16 July 2020}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 %
 % Document class for lecture slides.
@@ -18,12 +18,13 @@
 % v1.3.2 Added text highlighting and \alertbf macros.
 % v1.3.3 Corrected trailing spacing of \highlight.
 % v1.3.4 Added hack to increase itemsep of top-level list items.
+% v1.3.5 Added normalem option to ulem package.
 %
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
 \NeedsTeXFormat{LaTeX2e}[2001/06/01]
 \ProvidesClass{lectureslides}%
-         [2019/05/17 INFO lecture slides style, v.1.3.4]
+         [2020/07/16 INFO lecture slides style, v.1.3.5]
 
 % "Stream of conciousness" chapters vs. explicit individual classes. NOTE:
 % you can't have both chapters and classes! This is because we use the same
@@ -41,7 +42,7 @@
 % Load required packages.
 \RequirePackage{tikz}
 \RequirePackage{pgf} % DEPRECATED: only included for backwards compatibility
-\RequirePackage{ulem}
+\RequirePackage[normalem]{ulem}
 \RequirePackage{pifont}
 \RequirePackage{xr}
 \RequirePackage{multido}