diff --git a/Dockerfile b/Dockerfile
index 9d0a84a..b96082f 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -5,7 +5,9 @@ RUN apk update && apk upgrade && \
 
 COPY Gemfile Gemfile.lock .
 
-RUN gem install bundler -v "$(grep -A 1 "BUNDLED WITH" Gemfile.lock | tail -n 1)" && \
+RUN gem install loofah -v 2.2.2
+
+RUN gem install bundler -v "$(grep -A 1 'BUNDLED WITH' Gemfile.lock | tail -n 1)" && \
     bundle config set without 'development test' && \
     bundle install
 
diff --git a/README.md b/README.md
index 1a55af0..df7d6cf 100644
--- a/README.md
+++ b/README.md
@@ -31,3 +31,4 @@ Lastly, run the following command to run the tests:
 bundle exec rake test
 ```
 abc
+d