diff --git a/.github/workflows/unit-tests.yml b/.github/workflows/unit-tests.yml
index 04f8d6c..c5010fb 100644
--- a/.github/workflows/unit-tests.yml
+++ b/.github/workflows/unit-tests.yml
@@ -17,7 +17,7 @@ jobs:
       - name: Set up Ruby
         uses: ruby/setup-ruby@v1
         with:
-          ruby-version: '3.0'
+          ruby-version: '3.4'
           bundler-cache: true
 
       - name: Run unit tests
diff --git a/.ruby-version b/.ruby-version
new file mode 100644
index 0000000..7bcbb38
--- /dev/null
+++ b/.ruby-version
@@ -0,0 +1 @@
+3.4.9
diff --git a/Dockerfile b/Dockerfile
index 738261f..c225fd2 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,8 +1,8 @@
-FROM ruby:3.2.7
+FROM ruby:3.4.9
 
 WORKDIR /app
 COPY . ./
-RUN gem install bundler -v 2.4.19
+RUN gem install bundler -v 4.0.10
 RUN bundle install
 
 ENTRYPOINT []
diff --git a/Gemfile.lock b/Gemfile.lock
index df12a76..fd83352 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -194,4 +194,4 @@ DEPENDENCIES
   webmock
 
 BUNDLED WITH
-   2.4.19
+  4.0.10