diff --git a/fixtures/multibuildpack/ruby_calls_go/Gemfile.lock b/fixtures/multibuildpack/ruby_calls_go/Gemfile.lock
index 2a8e34681..0d6fdd762 100644
--- a/fixtures/multibuildpack/ruby_calls_go/Gemfile.lock
+++ b/fixtures/multibuildpack/ruby_calls_go/Gemfile.lock
@@ -1,19 +1,19 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    mustermann (1.1.1)
+    mustermann (3.0.0)
       ruby2_keywords (~> 0.0.1)
-    rack (2.2.6.4)
-    rack-protection (2.2.0)
-      rack
+    rack (2.2.8)
+    rack-protection (3.1.0)
+      rack (~> 2.2, >= 2.2.4)
     ruby2_keywords (0.0.5)
-    sinatra (2.2.0)
-      mustermann (~> 1.0)
-      rack (~> 2.2)
-      rack-protection (= 2.2.0)
+    sinatra (3.1.0)
+      mustermann (~> 3.0)
+      rack (~> 2.2, >= 2.2.4)
+      rack-protection (= 3.1.0)
       tilt (~> 2.0)
-    tilt (2.0.10)
-    webrick (1.7.0)
+    tilt (2.3.0)
+    webrick (1.8.1)
 
 PLATFORMS
   ruby
@@ -23,4 +23,7 @@ DEPENDENCIES
   webrick
 
 RUBY VERSION
-   ruby 3.1.3p185
+   ruby 3.4.2p28
+
+BUNDLED WITH
+   2.6.2
diff --git a/manifest.yml b/manifest.yml
index 7181c86bf..8699d14d6 100644
--- a/manifest.yml
+++ b/manifest.yml
@@ -22,6 +22,10 @@ dependency_deprecation_dates:
   name: ruby
   date: 2027-03-31
   link: https://www.ruby-lang.org/en/news/2023/12/25/ruby-3-3-0-released/
+- version_line: 3.4.x
+  name: ruby
+  date: 2028-03-31
+  link: https://www.ruby-lang.org/en/news/2024/12/25/ruby-3-4-0-released/
 dependencies:
 - name: bundler
   version: 2.6.5
@@ -169,6 +173,22 @@ dependencies:
   - cflinuxfs4
   source: https://cache.ruby-lang.org/pub/ruby/3.3/ruby-3.3.7.tar.gz
   source_sha256: 9c37c3b12288c7aec20ca121ce76845be5bb5d77662a24919651aaf1d12c8628
+- name: ruby
+  version: 3.4.2
+  uri: https://buildpacks.cloudfoundry.org/dependencies/ruby/ruby_3.4.2_linux_x64_cflinuxfs3_d4d30e0f.tgz
+  sha256: d4d30e0f5b9939e31cc394ad23217b9f7a8ca563fed8ae466cf269cf25f0b485
+  cf_stacks:
+  - cflinuxfs3
+  source: https://cache.ruby-lang.org/pub/ruby/3.4/ruby-3.4.2.tar.gz
+  source_sha256: 41328ac21f2bfdd7de6b3565ef4f0dd7543354d37e96f157a1552a6bd0eb364b
+- name: ruby
+  version: 3.4.2
+  uri: https://buildpacks.cloudfoundry.org/dependencies/ruby/ruby_3.4.2_linux_x64_cflinuxfs4_c2c94838.tgz
+  sha256: c2c94838324a9d038545234cb4666a18e6e5a352c535ca56b8794ead42a2f146
+  cf_stacks:
+  - cflinuxfs4
+  source: https://cache.ruby-lang.org/pub/ruby/3.4/ruby-3.4.2.tar.gz
+  source_sha256: 41328ac21f2bfdd7de6b3565ef4f0dd7543354d37e96f157a1552a6bd0eb364b
 - name: rubygems
   version: 3.6.5
   uri: https://buildpacks.cloudfoundry.org/dependencies/rubygems/rubygems_3.6.5_linux_noarch_any-stack_d7b1bd74.tgz