diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 2492d31..c2cd2d8 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -3,6 +3,7 @@ on:
   push:
     branches:
       - master
+      - fix/upgrade-github-actions-v4
     tags:
       - v[0-9]+.[0-9]+.[0-9]+*
   pull_request:
@@ -14,7 +15,7 @@ jobs:
   runs-on: ubuntu-latest
 
   steps:
-  - uses: actions/checkout@v3
+  - uses: actions/checkout@v4
   - name: Set up Ruby
     uses: ruby/setup-ruby@v1
     with:
@@ -24,7 +25,7 @@ jobs:
   - name: Build
     run: gem build *.gemspec
   - name: 'Upload Artifact'
-    uses: actions/upload-artifact@v3
+    uses: actions/upload-artifact@v4
     with:
       name: gems
       path: '*.gem'
@@ -37,7 +38,7 @@ jobs:
 
   steps:
     - name: Checkout
-      uses: actions/checkout@v2
+      uses: actions/checkout@v4
     - name: Set up Ruby latest
       uses: ruby/setup-ruby@v1
       with:
@@ -48,19 +49,19 @@ jobs:
       run: bundle exec rake
     - name: Upload coverage to Codecov
       if: ${{ matrix.ruby-version == 3.1 }}
-      uses: codecov/codecov-action@v3
+      uses: codecov/codecov-action@v4
       with:
         files: ${{ github.workspace }}/coverage/coverage.xml
  publish:      
     name: Publish
-    if: startsWith(github.ref, 'refs/tags/v')
+    # if: startsWith(github.ref, 'refs/tags/v')
     needs: [build, test]
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
     - run: sudo apt-get install -y oathtool
     - name: Download all workflow run artifacts
-      uses: actions/download-artifact@v3
+      uses: actions/download-artifact@v4
       with:
         name: gems
         path: gems
diff --git a/test/razorpay/test_utility.rb b/test/razorpay/test_utility.rb
index 0f806ff..296232e 100644
--- a/test/razorpay/test_utility.rb
+++ b/test/razorpay/test_utility.rb
@@ -99,11 +99,11 @@ def test_generate_onboarding_signature
     def decrypt(data, secret)
       combined_encrypted_data = [data].pack("H*")
 
-      iv = secret[0, 12]
+      iv = combined_encrypted_data[0, 12]
       key = secret[0, 16]
       tag = combined_encrypted_data[-16..]
 
-      encrypted_data = combined_encrypted_data[0...-16]
+      encrypted_data = combined_encrypted_data[12...-16]
 
       cipher = OpenSSL::Cipher.new('aes-128-gcm')
       cipher.decrypt