diff --git a/Dockerfile b/Dockerfile
index 732b4183c..016bf7da9 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -30,6 +30,7 @@ RUN apt-get update \
 		libpq-dev \
 		libqpdf-dev \
 		libxml2 \
+		libxslt-dev \
 		optipng \
 		pngquant \
 		qpdf \