diff --git a/Dockerfile b/Dockerfile
index 36bd5286..e544ff13 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -56,6 +56,8 @@ RUN gem install bundler:2.4.22
 
 RUN bundle config --global build.nokogiri --use-system-libraries
 
+RUN dpkg -i https://github.com/jgm/pandoc/releases/download/3.1.12.1/pandoc-3.1.12.1-linux-amd64.tar.gz
+
 WORKDIR /data/github-markup
 COPY github-markup.gemspec .
 COPY Gemfile .
diff --git a/Gemfile b/Gemfile
index efa4c1a0..0e1aa030 100644
--- a/Gemfile
+++ b/Gemfile
@@ -16,3 +16,4 @@ gem "wikicloth", "=0.8.3"
 gem 'asciidoctor', '~> 2.0', '>= 2.0.21'
 gem 'rake', '~> 13.1'
 gem 'pandoc-ruby', '~> 2.1', '>= 2.1.10'
+