diff --git a/.github/workflows/publish-ruby.yml b/.github/workflows/publish-ruby.yml
index 4b3e4de..5fc8604 100644
--- a/.github/workflows/publish-ruby.yml
+++ b/.github/workflows/publish-ruby.yml
@@ -37,6 +37,14 @@ jobs:
     needs: test
     runs-on: ubuntu-20.04
     steps:
+    - uses: actions/checkout@v3
+    - name: Set up Ruby for release
+    # To automatically get bug fixes and new Ruby versions for ruby/setup-ruby,
+    # change this to (see https://github.com/ruby/setup-ruby#versioning):
+      uses: ruby/setup-ruby@v1
+      with:
+        ruby-version: '3.1.0'
+        bundler-cache: true # runs 'bundle install' and caches installed gems automatically
     - name: Publish to RubyGems
       run: |
         mkdir -p $HOME/.gem
@@ -48,3 +56,4 @@ jobs:
         rm $HOME/.gem/credentials
       env:
         GEM_HOST_API_KEY: "${{secrets.RUBYGEMS_AUTH_TOKEN}}"
+
diff --git a/lib/postfinancecheckout-ruby-sdk/api_client.rb b/lib/postfinancecheckout-ruby-sdk/api_client.rb
index dbfde00..2ff221a 100644
--- a/lib/postfinancecheckout-ruby-sdk/api_client.rb
+++ b/lib/postfinancecheckout-ruby-sdk/api_client.rb
@@ -102,7 +102,7 @@ def build_request(http_method, path, opts = {})
       http_method = http_method.to_sym.downcase
 
       default_headers = {
-        'x-meta-sdk-version': "4.3.0",
+        'x-meta-sdk-version': "4.4.0",
         'x-meta-sdk-language': "ruby",
         'x-meta-sdk-provider': "PostFinance Checkout",
         'x-meta-sdk-language-version': RUBY_VERSION
diff --git a/lib/postfinancecheckout-ruby-sdk/version.rb b/lib/postfinancecheckout-ruby-sdk/version.rb
index ee8a34d..bf44861 100644
--- a/lib/postfinancecheckout-ruby-sdk/version.rb
+++ b/lib/postfinancecheckout-ruby-sdk/version.rb
@@ -16,5 +16,5 @@
 =end
 
 module PostFinanceCheckout
-  VERSION = '4.3.0'
+  VERSION = '4.4.0'
 end