diff --git a/linux/Dockerfile b/linux/Dockerfile
index 5bd9612..f59dbe5 100644
--- a/linux/Dockerfile
+++ b/linux/Dockerfile
@@ -62,6 +62,7 @@ RUN --mount=target=/build/script.sh,source=/build/system/packages/04-browsers.sh
 RUN --mount=target=/build/script.sh,source=/build/system/packages/05-zstd.sh /build/script.sh
 RUN --mount=target=/build/script.sh,source=/build/system/packages/06-python.sh /build/script.sh
 RUN --mount=target=/build/script.sh,source=/build/system/packages/07-nodejs.sh /build/script.sh
+RUN --mount=target=/build/script.sh,source=/build/system/packages/08-ruby.sh /build/script.sh
 RUN --mount=target=/build/script.sh,source=/build/system/setup-runner.sh /build/script.sh
 RUN --mount=target=/build/script.sh,source=/build/system/cleanup.sh /build/script.sh
 COPY --chown=1000:1000 --link root/ /
diff --git a/linux/build/system/packages/08-ruby.sh b/linux/build/system/packages/08-ruby.sh
new file mode 100755
index 0000000..a2103a4
--- /dev/null
+++ b/linux/build/system/packages/08-ruby.sh
@@ -0,0 +1,5 @@
+#!/usr/bin/bash
+set -euxo pipefail
+
+apt-fast install --no-install-recommends ruby-full
+gem install bundler