diff -r fd88a0656164 -r 7fd1f611c21d langs.sty
--- a/langs.sty	Thu Dec 17 17:43:40 2020 +0000
+++ b/langs.sty	Sat Dec 19 00:13:58 2020 +0000
@@ -36,7 +36,7 @@
 \AfterEndEnvironment{lstlisting}{\end{minipage}\par}
 
 \lstdefinelanguage{Scala}{
-  morekeywords={abstract,case,catch,class,def,%
+  morekeywords={abstract,then,case,catch,class,def,%
     do,else,extends,false,final,finally,%
     for,if,implicit,import,match,mixin,%
     new,null,object,override,package,%