diff --git a/extension/sidepanel/index.html b/extension/sidepanel/index.html
index 989d843..44b94c6 100644
--- a/extension/sidepanel/index.html
+++ b/extension/sidepanel/index.html
@@ -97,7 +97,7 @@ <h3>Settings & Privacy</h3>
         <div class="form-group">
           <label for="api-key-input">Google AI Studio API Key (Optional BYOK)</label>
           <input type="password" id="api-key-input" placeholder="AIzaSy..." />
-          <a id="get-api-key-link" href="https://aistudio.google.com/app/apikey" target="_blank" class="help-link">Get your free Google AI Studio key &rarr;</a>
+          <a id="get-api-key-link" href="https://aistudio.google.com/app/apikey" target="_blank" rel="noopener noreferrer" class="help-link">Get your free Google AI Studio key &rarr;</a>
           <p class="help-text">Leave blank to use the built-in free demo tier.</p>
         </div>
         <button id="save-settings-btn" class="secondary-btn">Save Settings</button>