diff --git a/.ruby-version b/.ruby-version
index 86fb65044..7921bd0c8 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-3.3.7
+3.4.8
diff --git a/Dockerfile b/Dockerfile
index c24012d84..a1441aac6 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM ruby:3.3.7-slim@sha256:696f37b3cd55288b5127850e3eeae67dd20595ab77a6724f7bb05baa8c6b4878
+FROM ruby:3.4.8-slim@sha256:6398d9efa8ed214cdc574b9447950e7f039bd613cc9f4bf893a65a21fd5d68d8
 
 # Define args that can be supplied with
 # `docker build --build-args RAILS_ENV=<env>`, defaults to production.