diff --git a/.ruby-version b/.ruby-version
index ef538c2..be94e6f 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-3.1.2
+3.2.2
diff --git a/Dockerfile b/Dockerfile
index a2a6124..f2cff8d 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-ARG ruby_version=3.1.2
+ARG ruby_version=3.2
 ARG base_image=ghcr.io/alphagov/govuk-ruby-base:$ruby_version
 ARG builder_image=ghcr.io/alphagov/govuk-ruby-builder:$ruby_version