diff --git a/.ruby-version b/.ruby-version
index 2aa513199..fcdb2e109 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-3.4.7
+4.0.0
diff --git a/Gemfile.lock b/Gemfile.lock
index 423ca23f2..a365b0af3 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -513,7 +513,7 @@ DEPENDENCIES
   turbo-rails
 
 RUBY VERSION
-   ruby 3.4.7p58
+  ruby 4.0.0p0
 
 BUNDLED WITH
-   2.7.2
+  4.0.3