diff --git a/Dockerfile b/Dockerfile
index 7e231b5e0bfb97e3984390b2d0112e23442b043f..cbd2e3c2e3bfbc17d4e150df1ef7ba4476dc8297 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -4,7 +4,8 @@ ENV PANDOC_VERSION=2.7.3
 
 RUN apk add --no-cache ttf-linux-libertine
 RUN apk add --no-cache texlive-full
-RUN apk add --no-cache hugo git 
+RUN apk add --no-cache hugo git
+RUN apk add --no-cache parallel
 
 RUN apk add --no-cache ca-certificates wget \
   && wget -O /tmp/pandoc.tar.gz https://github.com/jgm/pandoc/releases/download/${PANDOC_VERSION}/pandoc-${PANDOC_VERSION}-linux.tar.gz \