diff --git a/Dockerfile.bullseye b/Dockerfile.bullseye
index 9b8367a..c5be97d 100644
--- a/Dockerfile.bullseye
+++ b/Dockerfile.bullseye
@@ -1,6 +1,6 @@
 # syntax=docker/dockerfile:experimental
 
-FROM ruby:2.6.5-buster
+FROM ruby:2.7.4-buster
 
 # Replace shell with bash so we can source files
 RUN rm /bin/sh && ln -s /bin/bash /bin/sh