diff --git a/book/sourdough.sty b/book/sourdough.sty
index 13530a5..a1cb701 100644
--- a/book/sourdough.sty
+++ b/book/sourdough.sty
@@ -12,6 +12,7 @@
 \usepackage{fontspec}
 \usepackage{calc}
 \usepackage[font={sffamily, sbseries}]{quoting}
+\usepackage{microtype}
 
 \DeclareTOCStyleEntry[numwidth=3em]{tocline}{figure}