diff --git a/.cloud66/manifest.yml b/.cloud66/manifest.yml
index 4e3c445ecf..37b7f11173 100644
--- a/.cloud66/manifest.yml
+++ b/.cloud66/manifest.yml
@@ -1,3 +1,3 @@
 rails:
    configuration:
-     ruby_version: 3.4.3
+     ruby_version: 3.4.12
diff --git a/.devcontainer/post-create.sh b/.devcontainer/post-create.sh
index e57a3c0e06..fe1a1a13b6 100755
--- a/.devcontainer/post-create.sh
+++ b/.devcontainer/post-create.sh
@@ -15,7 +15,7 @@ rbenv init zsh &
 # gem install nokogiri -v 1.18.1 --platform=ruby -- --use-system-libraries
 
 # If the project's required ruby version (specified in .ruby-version)
-# changes from 3.4.3, this command will download and compile the correct
+# changes from 3.4.12, this command will download and compile the correct
 # version, but it will take a long time.
 echo "*** Installing rbenv-able Ruby ***"
 rbenv install --skip-existing &
diff --git a/.ruby-version b/.ruby-version
index 6cb9d3dd0d..25e863282b 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-3.4.3
+3.4.12