diff --git a/pandoc/Dockerfile b/pandoc/Dockerfile
index 8e99cb873ca62dc55cc7ff4a7d666a76f4b2f32c..23a49138b3f4d6fed5627fe7d8b85b2233c16923 100644
--- a/pandoc/Dockerfile
+++ b/pandoc/Dockerfile
@@ -15,7 +15,7 @@ RUN tlmgr option repository http://mirror.ctan.org/systems/texlive/tlnet \
 ENV CHROME_BIN="/usr/bin/chromium-browser" \
     PUPPETEER_SKIP_CHROMIUM_DOWNLOAD="true"
 
-RUN apk add --update udev ttf-freefont chromium npm make apk openssh-client\
+RUN apk add --update udev ttf-freefont chromium npm make openssh-client\
     && npm install -g mermaid-filter@1.4.5 --unsafe-perm=true
 
 ENTRYPOINT /bin/sh