diff --git a/extension/src/config-page.js b/extension/src/config-page.js
index 8fa1796..d9caec4 100644
--- a/extension/src/config-page.js
+++ b/extension/src/config-page.js
@@ -1,12 +1,16 @@
 (async function() {
-    const rejectCheckbox = document.querySelector('#enable-reject');
-    chrome.storage.sync.get('enable_reject', (data) => {
-        rejectCheckbox.checked = data.enable_reject;
-    });
-    rejectCheckbox.addEventListener('change', async function() {
-        await chrome.storage.sync.set({
-            enable_reject: rejectCheckbox.checked,
+    function initCheckbox(selector, configName) {
+        const checkbox = document.querySelector(selector);
+        chrome.storage.sync.get(configName, (data) => {
+            checkbox.checked = data[configName];
         });
-    });
-    rejectCheckbox.disabled = false;
+        checkbox.addEventListener('change', async function() {
+            conf = {}
+            conf[configName] = checkbox.checked;
+            await chrome.storage.sync.set(conf);
+        });
+        checkbox.disabled = false;
+    }
+    initCheckbox('#enable-reject', 'enable_reject');
+    initCheckbox('#enable-shrine', 'enable_shrine');
 })();
diff --git a/extension/src/config.html b/extension/src/config.html
index 043366a..7e37ec7 100644
--- a/extension/src/config.html
+++ b/extension/src/config.html
@@ -16,6 +16,13 @@
                     <input id="enable-reject" type="checkbox" disabled>
                     Enable fetching codes from rejectdopamine.com (3rd party service)
                 </label>
+
+                <br>
+
+                <label>
+                    <input id="enable-shrine" type="checkbox" disabled>
+                    Enable fetching codes from checkout.theshrine.net (3rd party service)
+                </label>
             </main>
         </div>
     </body>
diff --git a/extension/src/popup.js b/extension/src/popup.js
index 172967a..a163612 100644
--- a/extension/src/popup.js
+++ b/extension/src/popup.js
@@ -1,6 +1,26 @@
-chrome.storage.sync.get(['enable_reject'], async function(config) {
+chrome.storage.sync.get([
+    'enable_reject',
+    'enable_shrine'
+], async function(config) {
     const root = document.querySelector('#root');
 
+    function mergeCodes(activity, extraActivity) {
+        for (const code of extraActivity.codes) {
+            let found = false;
+            for (const code2 of activity.codes) {
+                if (code.code === code2.code) {
+                    code2.score += code.score;
+                    found = true;
+                    break;
+                }
+            }
+            if (!found) {
+                activity.codes.push(code);
+            }
+        }
+
+    }
+
     function codeTable(codes) {
         const table = document.createElement('table');
         table.innerHTML = '<thead><tr><th>Code</th><th>Score</th></tr></thead>';
@@ -113,19 +133,20 @@ chrome.storage.sync.get(['enable_reject'], async function(config) {
                 message('Warning: failed to fetch codes from reject');
             } else {
                 const extraActivity = await rejectRes.json();
-                for (const code of extraActivity.codes) {
-                    let found = false;
-                    for (const code2 of activity.codes) {
-                        if (code.code === code2.code) {
-                            code2.score += code.score;
-                            found = true;
-                            break;
-                        }
-                    }
-                    if (!found) {
-                        activity.codes.push(code);
-                    }
-                }
+                mergeCodes(activity, extraActivity);
+            }
+        }
+
+        if (config.enable_shrine) {
+            const shrineRes = await fetch(SERVER_URL + '/3p-proxy/shrine-checkout?' + query).catch((e) => {
+                message(`Something went wrong: ${e}`);
+                console.error(e);
+            });
+            if (!shrineRes.ok) {
+                message('Warning: failed to fetch codes from checkout.theshrine.net');
+            } else {
+                const extraActivity = await shrineRes.json();
+                mergeCodes(activity, extraActivity);
             }
         }