diff --git a/.ruby-version b/.ruby-version
index ef538c281..9c25013db 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-3.1.2
+3.3.6
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8f4fb37a9..d9a69780d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,8 @@
 
 [Full changelog][unreleased]
 
+- Update Ruby to 3.3.6
+
 ## Release 149 - 2024-11-21
 
 [Full changelog][149]
diff --git a/Dockerfile b/Dockerfile
index 6370101d8..8a5a62e03 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,7 +1,7 @@
 # ------------------------------------------------------------------------------
 # base
 # ------------------------------------------------------------------------------
-FROM ruby:3.1.2 AS base
+FROM ruby:3.3.6 AS base
 
 ARG RAILS_ENV
 ARG NODE_MAJOR
diff --git a/Gemfile.lock b/Gemfile.lock
index 7a97052b3..97751a74f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -613,7 +613,7 @@ DEPENDENCIES
   wicked
 
 RUBY VERSION
-   ruby 3.1.2p20
+   ruby 3.3.6
 
 BUNDLED WITH
    2.4.22