diff --git a/Dockerfile b/Dockerfile
index 1d9b82f..45d9743 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -7,6 +7,7 @@ WORKDIR /opt/narou
 RUN apk --update add ruby ruby-io-console ruby-json wget unzip && rm -rf /var/cache/apk/*
 
 RUN wget https://github.com/jam7/AozoraEpub3/releases/download/1.1.0b46/${AOZORA_EPUB3} -O /opt/AozoraEpub3.zip
+RUN wget https://github.com/jam7/AozoraEpub3/releases/download/openjdk-support/AozoraEpub3.jar -O /opt/AozoraEpub3.jar
 
 RUN wget http://kindlegen.s3.amazonaws.com/${KINDLEGEN} && \
     mkdir -p /opt/kindlegen && \
diff --git a/init.sh b/init.sh
index b1ead3c..9966bb4 100755
--- a/init.sh
+++ b/init.sh
@@ -2,6 +2,7 @@
 
 if [ ! -d "/opt/narou/.narou" ]; then
   unzip -q /opt/AozoraEpub3.zip -d /opt/narou/AozoraEpub3
+  cp /opt/AozoraEpub3.jar /opt/narou/AozoraEpub3
   ln -s /opt/kindlegen/kindlegen /opt/AozoraEpub3
   narou init -p /opt/narou/AozoraEpub3
   narou setting device=kindle