diff --git a/features/fixtures/rails6/Dockerfile b/features/fixtures/rails6/Dockerfile
index f60c1aa9..a151e4b3 100644
--- a/features/fixtures/rails6/Dockerfile
+++ b/features/fixtures/rails6/Dockerfile
@@ -1,13 +1,6 @@
 ARG RUBY_TEST_VERSION
 FROM ruby:$RUBY_TEST_VERSION
 
-RUN apt-get update
-
-RUN curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | apt-key add -
-RUN echo "deb https://dl.yarnpkg.com/debian/ stable main" | tee /etc/apt/sources.list.d/yarn.list
-
-RUN apt-get install -y nodejs yarn
-
 WORKDIR /bugsnag
 COPY temp-bugsnag-lib ./