diff --git a/.ruby-version b/.ruby-version
index 4772543..fa7adc7 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-3.3.2
+3.3.5
diff --git a/Dockerfile b/Dockerfile
index 28b5ace..d5a5097 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,5 @@
 # Make sure RUBY_VERSION matches the Ruby version in .ruby-version and Gemfile
-ARG RUBY_VERSION=3.3.2
+ARG RUBY_VERSION=3.3.5
 FROM ruby:$RUBY_VERSION-slim as base
 
 # Rails app lives here
diff --git a/Gemfile b/Gemfile
index 8dafecf..b60a0ab 100644
--- a/Gemfile
+++ b/Gemfile
@@ -9,6 +9,7 @@ gem "bootsnap", require: false
 gem "httpx"
 gem "importmap-rails"
 gem "opengraph_parser"
+gem "ostruct" # to avoid deprecation warning, this gem will be removed in Ruby 3.5.0
 gem "pg"
 gem "propshaft"
 gem "puma"
diff --git a/Gemfile.lock b/Gemfile.lock
index 4d404fe..edac712 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -141,6 +141,7 @@ GEM
     opengraph_parser (0.2.5)
       addressable
       nokogiri
+    ostruct (0.6.0)
     pg (1.5.8)
     propshaft (1.1.0)
       actionpack (>= 7.0.0)
@@ -263,6 +264,7 @@ DEPENDENCIES
   httpx
   importmap-rails
   opengraph_parser
+  ostruct
   pg
   propshaft
   puma
@@ -276,7 +278,7 @@ DEPENDENCIES
   webmock
 
 RUBY VERSION
-   ruby 3.3.2p78
+   ruby 3.3.5p100
 
 BUNDLED WITH
-   2.5.11
+   2.5.22
diff --git a/spec/rails_helper.rb b/spec/rails_helper.rb
index 7767ce3..b4b614d 100644
--- a/spec/rails_helper.rb
+++ b/spec/rails_helper.rb
@@ -34,7 +34,7 @@
 
 RSpec.configure do |config|
   # Remove this line if you're not using ActiveRecord or ActiveRecord fixtures
-  config.fixture_path = "#{Rails.root}/spec/fixtures"
+  config.fixture_paths = ["#{Rails.root}/spec/fixtures"]
 
   # If you're not using ActiveRecord, or you'd prefer not to run each of your
   # examples within a transaction, remove the following line or assign false
diff --git a/spec/requests/posts_controller_spec.rb b/spec/requests/posts_controller_spec.rb
new file mode 100644
index 0000000..e9aa8b8
--- /dev/null
+++ b/spec/requests/posts_controller_spec.rb
@@ -0,0 +1,11 @@
+RSpec.describe "PostsController" do
+  describe "GET /posts" do
+    it "returns a successful response" do
+      Post.create!(title: "Title", body: "Body")
+
+      get "/posts"
+
+      expect(response).to be_successful
+    end
+  end
+end